This may be the wrong forum, but what the hell.
(Disclaimer: I don't work for Twitter or any of the web sites mentioned below)
If you use Twitter (I'm a big fan) and would like to build up your network or target conversations to a specific market/company/person, you should check out this site:
http://twitterpacks.pbwiki.com/ It has hundreds of categories for new Twitter conversations, including a DJ section:
http://twitterpacks.pbwiki.com/Twitt...c#Musicians/DJ
I think Twitter is a great way to self-promote, because you can instantly send out your messages and bulletins to hundreds (maybe thousands) of people at the same time. I am sure you could get more audience view than anything you could post at DDM and certainly much more than a blinking banner than gives you a headache.
Uncle Mick says check it out.