There are two sites I have been enjoying over the past few months, but they are especially better when more people play.

The first is Last.fm. If you like music and are a rabid user of iTunes, why don’t you sign up for an account and befriend me? I’ve been introduced to some great new music and there are (probably too) many features lurking under the surface of this site. However, all you need to do is load up the Last.fm software and turn “scrobbling” on. Last.fm does the rest. The perfect compliment is an emusic account. Unlike iTunes, you get 75 downloads a month for $19.99. That’s a deal!

The other addictive site is Twitter. I’ve heard it described as public IM. I prefer to think of it as quick blogging. The wittier your writing the better, but again, this is social software, so sign-up and befriend me.