Let the hive mind of Engadget get that for you.
"I've found myself using my PC for a lot of conversations lately, and I'm also considering recording a podcast to share with anyone who will listen. There are tons of USB headset / microphones out there, and I'm hoping someone has some solid recommendations based on experience. I'll consider both headsets and standalone mics, by the way, but I'd like to keep the bill under $100 if possible. Help!"
It's inevitable. There is guaranteed to be _some_ problem, and the media is going to hammer it at least as hard as they are hyping the thing now. Sort of like with the iPod battery or G1 nano scratching - only a hundred times worse.
It's just the nature of our (retarded) media.