I must say I am not that much into Twitter. While I did start out on Twitter I found the "conversations" there too messy. I don't see how people follow hundreds of people with Twitter. I only followed a handful and had to drop some people who tweeted too often. I still use the web browser instead of some fancy Twitter client so I don't see threaded messages. I prefer to see a variety of tweets, so if one person monopolizes my Twitter page, off he goes.
Plurk, on the other hand, keeps messages threaded so that you see both the original posts and replies to them. How logical! And no need to do @ and #, just address the person's name and it's automatically highlighted. I even use Plurk to update my FB and Twitter status now. You just have to watch your karma, a point system that probably doesn't mean anything, but fun to maintain. Don't plurk for a day or two and it drops fast, whereas climbing back up is measured in units of .01.
I also spent a lot of time on the reunion for my high school class, Newtown High School in Elmhurst, Queens, New York, Class of 1985. I had to sneak the school reference into the cartoon. Hopefully I'll snare a few more alumni.