ok, i have this logitech web cam that i can use for instant messaging. recently yahoo IM has allowed phone calls thru the IM. the clarity seems to be good and i think i like it. however, you must have a microphone and/or web cam to use it. i don't have a lot of folks on IM, and only a couple use this phone feature. anyone else using it, and do you like it? i see no reason it can't stand in for a real phone, with the main drawback is your PC has to stay on 24/7...a lot of them already do.