Just start friending people you think are cool and commenting on plurks. I builds up pretty quickly!

I'm pretty used to twitter, how can i find new people on here?

Check out your friends' friends. Look at their friends lists and comments made on their plurks. That's all I did.

If you like them, friend them! Take a look at my friends list. It's full of awesome people!

whats all day every day?

If you want to use both Plurk and Twitter, I recommend Ping.fm as a handy tool.