One of my other blogs has several sections in it that are not powered by WordPress, but my wife and I do a lot of work in those sections. But that work is behind the scenes, which means it isn’t immediately obvious that we’ve done anything to the site. So I created a twitter account just for that site, and installed their widget into the sidebar. We’ll see how well that works, but I think I am already pretty happy with the results. The site is ShowBizRadio.net, the audition and schedule listings are the largest sections that aren’t run by WP.
By the way, my twitter account is planetmike