Are you on Twitter? Linkedin? Facebook? Leave your advice in the comments.

I caved to Twitter. It was a moment of weakness. But, as is necessary with all those social media apps, I feel I approached with a purpose: I want to find writers. But is Twitter best used as a mini-blog? What's the best way to self-promote without sounding like a douchebag spammer?

Have you had success on Twitter of Facebook or any of the other umpteen thousand social network crackhouses? I want to hear your smashing success stories. Leave tips, secrets, and suggestions to me and others new to the tweet.