[sparkzilla]

>You definitely do want to vet your cofounders for trustworthiness and have some idea whether they're interested in founding a company with you or whether they just want your idea.

This advice would have been handy for the Winkelvoss twins, who hired Zuckerberg to build their social network project. Instead he secretly held their project back while building his own version, including their ideas. The rest, as they say, is his story.