That can work better than just Skype, but I guess I don't generally see the benefit. As long as all parties are chat-fluent (I've worked with some people who aren't, and then it can be painful, like IMing with my parents), I find IRC discussions better than Skype. Especially true if three or four people are participating; conference calls are much harder to demultiplex, at least for me, with all this time wasted on people accidentally speaking over other people, asking for something to be repeated, etc., etc. And with text, you can grep the logs, too!