Thinking of getting a USB microphone. Which one works best with Mac?

I just joined @SoundCloud Check me out at http://ping.fm/NC4bU

Dumb Ways to Pick a Smart Phone
http://bit.ly/aA7gWH

The moment you recognise something is broken, fix it, or else suffer the consequence of going insane.

How music can affect perception
http://bit.ly/cZFC6Y

Breaking News - Michael Jackson:
http://bit.ly/bcPLWj

Speedy Messaging App Kik Goes Viral, But Is It Cool With Apple’s TOS?
http://tcrn.ch/cyAhCD