Personally I hate Skype. I try to use Google+ for any video calls I need to make. Skype pirates high bandwidths without you even knowing it, eventually causing your web browser to crash and severely slowing down your computer. They do this by supernoding, or using your bandwidth to literally direct hundreds of calls. Google refuses to do this, hence, they're my preferred video calling service. But yes, on top of that, Skype is fraught with plenty of errors including the ones Chiletrek has already mentioned. They're just so blegh for me. The only reason I use them is because MSN has been merged with it, and some of my contacts only use that, but I avoid it whenever I can.