I just installed Skype on my PC to have a look at it, but really wonder what it adds. I am already available through ICQ, MSN, AIM, Yahoo and IRC, and most of these services also support audio chats with reasonable quality. In my opinion Skype is just another IM client. I don't want to have yet another client, I only want that the existing clients work together. Of course, I don't have five applications running, I use Trillian, but it does open five network connections over different ports.
For the moment, you can Skype me at icg-jeroen. If I find it useful, I will keep on using it.