[valarauca1]

Timeo Danaos et dona ferentes, which roughly means "Beware of Greeks bearing gifts."

One doesn't build a multi-billion company by giving things away.

[uli]

Exactly, FBStart is no charity, so why do they do it? You don't even need to integrate your product with FB. I would love to apply but the offer is too good to be true.

[smacktoward]

Maybe a modern version: beware of geeks bearing gifts?

[valarauca1]

The saying is almost 2000 years old [1], so I think if somebody wanted to modernize it they've had the chance :P

[1] First writing appears in a text from AD 49