A malicious worm is taking advantage of the Skype API to spam out messages similar to the one below:lol is this your new profile pic? http://goo.gl/[REDACTED]?img=[USERNAME] The threat can also spread via USB sticks and various instant messaging protocols. Skype says it is aware of this malicious activity and is working quickly to mitigate its impact. The threat is a variant of the Dorkbot worm, which has been spotted over the last year on Facebook and Twitter.”]
Source: https://nakedsecurity.sophos.com/2012/10/08/skype-worm-spreads/