No one knew Internet calls could be better until Skype came along. Just a quick recap as to what Skype can do: it allows people continents apart to call each other over the Internet, free-of-charge. On a more etymological note (wait, what?), it has also evolved into a verb, similar to what happened to 'Friend' thanks to Facebook, you can just tell someone that you'll "skype" them.
However, all isn't well in the world of Skypedom, as Ghacks reports that a security vulnerability can allow a third-party script to uncover someone's IP address even if they're not in your contact list. In short, Elmo knows where you live and who your Internet service provider is.
BGR says the only method to protect users against this would be to have a VPN or virtual private network---connections routed through the Internet from your office or home network to specific users. We suggest being up-to-date with these kinds of reports so you can better protect your data.
Being Internet famous is the 'in' thing right now, but if it's going to be used to track citizens down Minority Report-style, we think nipping it in the bud would be a wiser path to take. To quote street artist and master of anonymity himself, Banksy (oh, you don't know him? Click here), "In the future, everyone will be anonymous for fifteen minutes."