if you've signed up with several different social networks, like moi, you can post to ping.fm and it'll post to all of them at once.

I'm trying it now because I'm bored.

most of my posts are duplicated between plurk & twitter, and many more between about 10 social sites. Ping.fm is great!

thanks for the advice

great.. I'm joining twitter now too.. thanks... lol

Sounds neat!