Utilizing Social Media

I’ve been using social media for awhile now. While I think it’s a HUGE time suck in many respects, it seems as though many freelancers have really embraced it as a means to network, find job leads, and locate sources.

My question is—how have you utilized social media to grow your business?

I’m sure I’m showing my ignorance here, but I haven’t had tremendous luck with finding more business through these outlets. Twitter will have the occasional “tweet” that stands out or provides a good business lead, but overall, most of my work has come from good old-fashioned querying, and to a lesser extent, word-of-mouth referrals.

So I’m curious—how has social media helped your business? Is there one website that's been especially beneficial for you?