I was recently approved for FBStart's bootstrap program.
So far, I've only used the UserTesting.com credits (which are awesome) but I plan to use the adobe trial
I ran a FB ad campaign once in the past so I'm not sure that I'm eligible for their ad credits which is the biggest perk in my eyes.
I'd argue it's a good program that gets fledgling apps/companies to build an early connection with Facebook. That's their ROI; introduce you to FB ads early and you'll want to use them later
Interesting that they're opening with a different price model than Seattle's. $299/year and according to GeekWire their groceries are approximately 14% higher than in-store.