The microphone is at a 3.5 mm jack connector. I use it on a USB dongle Sound with microphone input ("USB sound card") in the same price category on the Mac OS X 10.6.8. Consequently, it is accepted by every conceivable application, including (but not exclusively) Skype, iMovie, iChat and much more.
The thus achieved sound quality is unexpectedly good, unwanted noise fall gratifying low. In the heights of a little lacking the brilliance that you should also prefer not to turn up in order to avoid high hiss arrears on Equalizer. But all in all I had fears of a "5-plastic microphone" significantly worse sound.
The result of spoken language is better than when you (actually pretty good) uses the built-in micro iMac or traditional underground Mikrofönchen in netbooks with a loud cooling in any case to classes. This is due to the proximity to the mouth of the speaker a totally different voice quality than with "space-microphones" in which one speaks of 50-80cm distance. This applies for example when recording video logs, but certainly also in the Skype telephony: While the micro placed sicherklich in the former case as unobtrusive as possible to the shirt collar or sweater-neck, it is sufficient when Skypen well, the micro on earloop headphone festzuklipsen. In this way you have the opportunity to take a schrebbeligen plastic combination of lightweight headphones and cheap micro now to combine the preferred Hi-Fi headphones with a very useful micro to an official headset (if you can live with the two cables).
Long story short: The thing is good more than you would trust him in this price segment. Who does not believe, is to try it yourself quietly - you can go far wrong with the price really is not.