Twittering for Writers

I suppose this falls under the much debated topic of self-promotion for writers, but some time ago I joined Twitter. I'll be honest. I don't really know how to use Twitter effectively. I just post the occasional lame tweet about my life. Apparently, there's more to it than that. Someone on another list I belong to pointed me to Inkygirl's blog post: Twitter Guide for Writers. I'm sure most of you techno-savvy kids already know all there is to know about Twitter, but for the few that don't......