Facebook

Chris Pratt, who just filed for divorce, will not join the hordes on online dating services.

We got Chris leaving Jimmy Kimmel's studio in L.A. Monday night, and asked for a status update on his Facebook impostor sitch. Sounds like it's still pending.

Chris sent a message to his female fans over the weekend warning 'em of a guy posing as him on the social media site ... supposedly asking for numbers and dates.

Chris Pratt is on the warpath against a dude who is posing as him to score dates.

Chris is ballistic someone is pretending to be him on Facebook, hitting on women and trying to get their phone numbers. He posted a warning, "If I find out who it is I'll have their account shut down and seriously would like to punch them right in the GD mouth," adding, "You hear that imposter!?"

He goes on to call the faux Pratt a predator, saying, "Makes me sick."

Apparently this guy is impersonating Chris a lot and has hit up a number of women.

Matt Lauer, formerly the face of NBC, is already a ghost as far as the network's online presence is concerned.

Lauer's been replaced on the "Today" cover photos for the show's social media -- specifically Facebook and Twitter. They used to feature Matt and Savannah Guthrie, but now it's more group shots of all NBC's morning personalities.

Matt is still featured in old "Today" Facebook and Twitter photos and clips -- so, they're not trying to rewrite history. Not yet, anyway.

As we reported ... Lauer was abruptly fired Wednesday after a complaint about inappropriate sexual behavior was filed against him.

Mark Zuckerberg admits using hurricane-ravaged Puerto Rico as the backdrop to roll out Facebook's new 360-degree virtual reality technology ... was a super tone-deaf idea. No duh.

Zuckerberg issued an apology for the demonstration he and other FB staffers pulled off on Tuesday. The technology is, no doubt, cool -- using VR to drop your friends into your home, your vacation ... or maybe even your decimated homeland ... in the case of millions of Puerto Ricans.

The video is stunning -- make sure you wait for the high-five between Mark and his social media honcho, Rachel.

Ben Affleck is condemning Harvey Weinstein -- who helped make him an Oscar winner -- calling his actions "completely unacceptable."

Affleck says reading the allegations against Weinstein made him sick, especially because they'd worked together so closely on "Good Will Hunting" -- the 1997 Miramax release that earned Ben his first Oscar.

Rose McGowan seemed to be calling out Ben and his brother Casey on Monday with a vague tweet ... suggesting they've known about Weinstein's behavior, but had remained silent.

Affleck added in his statement, "We must support those who come forward" and condemn behavior like Weinstein's. He also said having "more women in positions of power" would help.

Speaking of women in power ... Hillary Clinton finally sounded off on Weinstein, who's famously made sizeable donations to her political campaigns.

Marshawn Lynch is going TANK MODE for his new reality show ... strappin' into an army-grade Abrams to crumple cars for fun.

And that's just a sample of the wildness Marshawn gets into for his new reality series "No Script," which debuts this week on Facebook.

In a 1-minute trailer, Lynch also does donuts in a race car, tries indoor AND outdoor skydiving and even takes B.P. with a damn sledgehammer.

But we think the best part was his Battlefield Vegas cameo ... where Beast Mode rides shotgun while a tank commander straight-up bulldozes a sedan. (Bonus: Marshawn is munching on a toothbrush for some reason.)

Dental hygiene is important.

Facebook created a workplace where employees openly mocked a guy for being as ancient as -- wait for it -- 50 years old ... at least according to the ex-worker who's suing.

Gary Glouner says he worked under the Facebook umbrella for 2 years, and during that time was the butt of many ageist jokes. According to the docs, obtained by TMZ, the age cracks included:

- "Old people shouldn't be working at Facebook; they just don't relate"
- "Old people are just creepy"
- "Old people don't belong at Facebook"

Glouner says Mark Zuckerberg himself made public comments in 2007 where he said, "Young people are just smarter." He adds ... the ageism was institutional because during an HR presentation they displayed a chart highlighting the low energy of employees in their 50s.

Worst of all, he says his co-workers in their 20s and 30s always got cake and group celebrations -- while he got bupkis. Glouner says his boss told him they didn't want to embarrass him by highlighting his advanced age. Damn. No cake?

Michael Phelps isn't taking a shred of blame for viewers' disappointment over him not racing an actual great white shark, and says he stands by the "incredible" made-for-TV event.

The 23-time Olympic gold medal winner opened himself up to his critics on Facebook and addressed the backlash from his Discovery Channel special. You'll recall, no doubt, Phelps lost to the shark ... but it was a CGI shark.

Phelps claims everyone involved in the man vs. beast production made it very clear what the "race" would entail, but people chose not to listen and now they're hatin' ... which he calls "shocking."

Speaking of shocking -- Michael didn't race a real shark, but REALLY did swim in 53 degree water!

The man suspected of opening fire at a congressional baseball practice is 66-year-old James T. Hodgkinson ... and judging by his social media, he REALLY hates Donald Trump.

Hodgkinson's Facebook page is loaded with anti-Trump posts. He's also a staunch Bernie Sanders supporter.

Also notable, Hodgkinson is also anti-Hillary Clinton, with several posts about her as well.

Among the posts on his page, there's one that stands out from March which says, "Trump is Traitor. Trump Has Destroyed Our Democracy. It's Time to Destroy Trump & Co."

Mark Zuckerberg created Facebook and made billions upon billions, but he never did get a degree from Harvard ... until now.

Mark was presented with an honorary Doctor of Laws degree Thursday at what would've been his alma mater if he hadn't dropped out to chase his FB dream back in 2004. He also delivered the commencement speech to this year's graduating class.

Zuck joked, "If I get through this speech today, it will be the first time I actually finish something at Harvard."

BTW ... James Earl Jones also got an honorary degree for his decorated acting career. Here's how we imagine, in the perfect galaxy (far, far away), his speech would've gone:

"Mark, I am your Doctor ... of Arts."

And then there were four ...

Five-person a capella group Pentatonix is about to lose Avi Kaplan ... who announced his departure Friday morning in video posted on the group's Facebook page.

Avi says he'd been struggling to keep up with the fast pace of the band, and missed his friends and family as well as not being able "to escape into nature when I’m feeling overwhelmed or just need some time to myself."

Pentatonix won the third season of NBC's "The Sing-Off" ... and they pop up on almost every award show doing tribute performances. They're about to kick off a summer tour that includes gigs in Japan, and 3 nights at the Hollywood Bowl.

Avi says he'll still do all those shows, but after the tour ... he's done.

Scott Baio can count on a can of whoopass if he ever runs into Erin Moran's brother, who wants payback for Scott's comments about Erin's substance abuse.

Tony Moran tore into Scott ... referring to a brief fling Erin and Scott had way back when they were young TV stars. His Tuesday Facebook post got nasty though when he said, "She told me that you were tiny." Then came the not so thinly veiled threat: "Get on your knees and pray you never run into me."

Tony's angry about Scott's radio interview where he took Erin to task for using drugs. At the time, Scott thought that's what killed her, but later learned it was cancer.

Scott told us he wouldn't have been so harsh if he'd known she was battling cancer -- but he stands firm on his view of addiction.

Battle lines are drawn.

Oprah LOVES Facebook Live -- despite some very troubling events this week -- and even bemoans that it wasn't around in the 25 years O talked for a living.

We got the queen Wednesday in D.C., where she sang the praises of the social media platform and her new movie, of course.

Oprah never mentioned the Facebook killer, but did say Facebook needed to be properly managed. That said, she clearly views it as a game changer.

Richard Simmons is back to doing what he does best -- delivering inspiration to his fans, and he's also hinting he'll come out of hiding soon.

Richard addressed his hospitalization this week for gastrointestinal issues, saying it "reminded me that when you need help you can't be afraid to reach out and ask for it."

He continued ... "I reached out and hope you will too. I'm sure there are people in your life who love and care for you and would do anything to help you with the challenges you face."

He posted a pic with his message -- though it appears to be an old shot -- and thanked fans for well wishes and added he should be back home in a couple of days.

As for the future, he said ... "Hope to see you again soon!"

Facebook killer Steve Stephens was undone by McDonald's employees who ID'd him and made him wait a little extra time for his order so the cops could come and catch him.

Stephens went through the drive-thru at the McDonald's on Buffalo Road in Erie, PA when one of the workers recognized him. He ordered a 20-piece McNugget and a large fry ... but workers made it seem the fries weren't ready so they could buy time.

According to the restaurant's manager ... Stephens got his nuggets, but then said he had to go and he drove off without the fries. It was enough time for cops to get on his tail.

Steve Stephens, the Facebook killer, killed himself about 90 minutes outside Cleveland during a high speed chase with cops in Pennsylvania.

Police in Erie, PA say Stephens' body was found inside his white Ford Fusion around 11:10 AM ET on Tuesday. The police were in pursuit of Stephens at the time after they responded to a tip that Stephens' car had been spotted in a nearby McDonald's parking lot.

Cops say Stephens' car came to a stop in the middle of the road near a former elementary school, and then he took his own life. He died on scene.

Erie is the town where police said they'd last gotten a ping from Stephens' mobile phone.

A nationwide manhunt had been underway since Sunday, when Stephens shot and killed Robert Godwin Sr. ... and then uploaded video of the murder to Facebook.