Facebook kicks off its annual developer event today under a cloud, New York looks to force Uber's hand on tipping, and another executive flies the coop at the ride hailing company. All that and more in The Daily Crunch for April 18, 2017. And you'll never guess what Steve Ballmer's doing next. Hint: It has nothing to do with screaming "Developers!" on stage.

1. Facebook details what happened when with posted video of murder

Facebook's annual developer event is kicking off today, but the company is still dealing with the aftermath of a video posted to its platform of a man being killed. The company detailed exactly what happened in a blog post with an included timeline late Monday.

Facebook acknowledged that its moderation system potentially needs work in light of the occurrence, and is reviewing its practices according to Facebook VP of Global Operations Justin Osofsky. Meanwhile Devin argues the case that social media is always only as safe or vile as the social animal it represents.

2. NYC might force Uber to build tipping into its app

It's one of the decisions that often perplexes users and drivers alike, but Uber's insistence on keeping tipping options out of its app is facing its biggest challenge from New York's Taxi and Limousine Commission. The TLC is proposing a rule that would force any service offering transportation in exchange for credit card only payments to add a card-based tipping option. Uber would obviously be caught up in that net.

3. Uber's Sherif Marakby departs

Meanwhile, Uber's executive exodus isn't over – VP of Global Vehicle Programs Sherif Marakby, who helped start the company's self-driving effort in its debut city of Pittsburgh, has left the company. The longtime Ford vet is a noteworthy blow to confidence in Uber's self-driving project, which has faced serious challenges lately.

4. Snapchat's World Lenses make the world a better place – artificially

Snapchat is expanded the reach of its Lenses from your face, to the world around you. Appropriately named World Lenses, these are filters that insert 3D objects wherever you point your smartphone's rear camera, letting you do things like put giant anthropomorphic rainbows on the grass and then dance around them in your Snaps.

5. PayPal and Android Pay become buddies

PayPal is working with Google's built-in mobile payments system for Android, which should help it get a leg up in the real-world mobile payments space. It's probably actually a bigger boost for Android Pay, since more ways to pay mean it's more likely people will actually use it. Mobile payments are still super young, despite years and years of hype.

6. Steve Ballmer's new thing is government transparency

Former Microsoft CEO Steve Ballmer has a new project, besides owning the Clippers, and it's a surprising turn for the animated former Redmond exec: USAFacts, a data-filled U.S. Government-focused website that aims to bring where the U.S. spends its money to light.

7. Pandora's Spotify rival opens to all

Pandora's paid subscription service is launching to all who would dare enter: It's not clear that anyone needs yet another subscription-based streaming music service, but Pandora's going to give it a shot anyway. The company must've seen something promising from its invite-only launch of the $9.99 per-month service.