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!"
actually the trackball makes no difference because if you remember when xerox palo alto research facility got raided for their mouse, the trackball(mouse)APPLICATION was taken with license...therefore the device would run its os under the trackball so the functionality and motion of the track ball would not change under the pretense of a portrait/landscape hybrid application which htc has been making since 2004....so ppppppppppppppppppbbbbbb!(***thats a raspberry***!...it the newest rimphone too....the raspberry....pbbbpbpbpbpbpbbbbbb)