I'm sure they didn't, but Skype is just that good. Every single VOIP system my group used had issues. The microphone picking up audio from speakers and keyboard

I'm sure they didn't, but Skype is just that good. Every single VOIP system my group used had issues. The microphone picking up audio from speakers and keyboard typing being two of the most problematic. Skype was the only one where that wasn't an issue. Their system just automagically filters out the cruft. Meanwhile the voice chat built into gmail was one of the absolute worst and was completely unusable. It's a much more complicated problem than people realize.