In a couple weeks, we’re heading to the Big Apple for the third U.S. Open Hack Day, our first ever on the East Coast. On October 9-10, we will welcome developers from around the world to the Hudson Theater and Millennium Broadway Hotel in Times Square for Yahoo! Open Hack NYC for two days of learning, networking, coding, and fun. It’s all free and you’re invited!

What is Open Hack Day? It’s what happens when clever web developers, a wireless connection, a host of web services, and massive quantities of caffeine, pizza and donuts come together for an all-night code-a-thon. After 24 hours, creative coders show off their mashup wares and clever apps, American Idol-style, before a panel of distinguished judges, who bestow awards, praise, and lots of geek cred.

Ever since the first Open Hack Day back in 2006, we’ve made it a priority to be as open and accessible to developers as possible. Yahoo!’s audience is global – and so is the base of developers who value our open tools,technologies and vast user base. We’ve hosted Open Hack Days in the U.K., India, Brazil, and Taiwan; next month, we’ll meet with developers, designers, and entrepreneurs from New York’s vibrant Web technology and digital media scene.

We’ll kick off the weekend with a Friday morning keynote from Internet guru and NYU professor Clay Shirky. That’s followed by a full day of tech talks, panel conversations, and hands-on workshops that cover the latest Yahoo! developer tools and services. Yahoo!’s open platforms let developers build things that anyone can use on and off Yahoo!: Flickr toys, Connected TV Widgets, and open apps that you can install for Yahoo! Mail, My Yahoo!, and more. On Friday evening, we’ll kick off the hack contest and hold our breath to see what’s built by Saturday afternoon. And in-between, we’ll host a special Open Hack edition of Ignite NYC -- a geek’s open mic.

What will take this year’s prize? A moblogging purse, a phenomenal way to share and organize your photos in Yahoo! Mail, an iPhone orchestra, or something we haven’t even thought of yet?

To get a better sense of the Open Hack Day showdown, check out Ricky Montalvo’s “Hackumentary,” a short film documentary shot during last year’s event in Sunnyvale. Here's the trailer:

Hack Day - a hackumentary short film from ricky montalvo on Vimeo.

Head over to http://www.icanhaz.com/yahoohacknyc to register, check out the wiki, or follow us (@ydn) on Twitter for updates. Let the countdown to Open Hack Day 2009 begin!

Chris Yeh
Head of the Yahoo! Developer Network