And The First Facebook IPO Hackathon Photos Roll In

Hundreds of Facebook employees congregated at ‘Hacker Square’ at the company’s Menlo Park headquarters this evening ahead of the company’s insanely-hyped initial public offering. Now, some of the first photos are starting to trickle in. There was a standing ovation for chief executive Mark Zuckerberg, who gave a talk before several long-time engineers bounced in while wearing capes or bringing boomboxes.

Tonight Facebook is having its 31st Hackathon to celebrate the IPO. Hackathons are a company tradition. They’re a place where engineers and other non-technical employees get to stay out all night building concepts into real products that sometimes eventually get shipped. Some of the big products that have come out of earlier Hackathons include Facebook chat and an early version of Timeline.

The company got its employees together around a big yellow crane that’s in the center of their ‘Hacker Square.’ The crane came from their old Palo Alto headquarters where it was originally put in by Agilent Technologies (the company that spun out of Hewlett Packard, which is arguably, the company that made Silicon Valley more than 70 years ago).

Here are some of the photos that have come in so far! The best photos are actually from Facebook product designer Francis Luu. But because we are trying not to be super lame, like various slideshow-addicted blogs that shall not be named, here is the link to his photo album. If you are a Facebook employee and are not living in ungodly fear of having your RSUs, options, etc. revoked on this special day, feel free to send us more photos at tips@techcrunch.com.

Here’s the crowd that gathered before Zuckerberg’s talk:

Here’s a photo that YouTube’s Hunter Walk posted of the standing ovation for Zuckerberg:

Here’s the set-up before the event started in a photo from Blake Ross, a director who was brought in through Facebook’s very first acquisition:

Here’s a new poster from Facebook’s analog research lab:

Here’s the commemorative T-shirt for the Hackathon:

More people hacking: