Ok, first thing's first - the mic. It works okay. That's about it. It's a little static-y when I plug it in - like if the plug moves in the ipod jack at all I hear some crackling. The quality isn't so bad - you can definitely tell it's a handsfree mic, but what do you expect for 10 bucks? Conclusion: Worth it as maybe a backup mic or a stopgap measure if a handsfree is needed right away. Me, I'm going to use it until I can get a Griffin Smart Talk. Now for the question: So far VoipStunt sucks pretty bad. I've managed, out of ten calls, to leave myself one phone message which allowed me to test the mic. For some reason it works to my phone but not to my girlfriend's or my mother's, and we're all on the same cell plan. I can only imagine Skype is better since it's a paid service, but I'd like to hear from anyone who has used both.