According to researchers at Kaspersky Lab, cybercriminals are trying to sell hacked Twitter user names and passwords on-line for hundreds of dollars.

Since 2005, the bad guys have been developing new data-stealing malware that is now a growing problem on the Internet. Some of these programs look for banking passwords, others hunt for on-line gaming credentials. But the fastest-growing data stealers are generic spying programs that try to steal as much information as possible from their victims, said Kaspersky Researcher Dmitry Bestuzhev, speaking at a press event Friday.

In 2009, Kaspersky identified about 70,000 of these programs -- twice as many as the year before, and close to three times the number of banking password stealing programs.

They're popular because criminals are starting to realize that they can do better than simply swiping credit card numbers. Bestuzhev has seen Gmail accounts for sale on Russian hacker forums, (asking price 2,500 rubles, or $82) RapidShare accounts going for $5 per month, as well as Skype, instant messaging and Facebook credentials being offered.