[Gigablah]

You have to be careful about the type of licenses as well. Happened to me, luckily it was a tiny library and there was an alternative available.

See anything with a "cute" license, such as WTFPL? Don't use it for work.

[hedora]

What's wrong with WTFPL?

I needed some wtfpl code for something, and asked a team of corporate lawyers to evaluate it.

They deemed acceptable, and whitelisted it at one of the biggest software companies around.

[Gigablah]

Another one of the biggest software companies around came to the opposite conclusion :(