With luck, this will get twitter posts working again from my Drupal site. If your twitter module has stopped working, this guide helped me get it going again.
You've been hearing a lot about it in the news, and you're only going to hear more and more. If your business isn't looking into twitter, you're missing a boat thats growing massively - http://xlnk.me/16.
There are ways you can take advantage of twitter, the great thing about twitter is that you dont have to have a long spiel about what you've been doing. This, and other "blogs" i've done do take time, and a real concerted effort to do. Twitter "tweets" are a lot more casual.