I met one of the founders around 6 or 7 months ago.
Honestly I felt like he was the first founder I'd met in NYC that wasn't a bullshitter. He was straight forward, and actually helpful.
Those guys have been working on Rap Genius for years and years -- before anyone in the tech industry had heard of it. They made it because they wanted it, and the site grew with the community.
They silently built an internet empire and didn't care about PR stunts or hype until they had REAL traction (because that's the only thing that really matters)... Which is a lot more than I can say for most NYC startups.
Honestly, I think there's so much potential in the idea -- it's a rocketship. If you're an engineer in NYC looking for a job, you should hit them up.