Skype co-founders said to be raising new venture dollars

The co-founders of Skype, Niklas Zennström and Janus Friis, are raising about $450 million for their London-based venture fund Atomico, according to a report from GigaOm.

Zennström and Friis, who also co-founded Joost and Kazaa, are heavily invested in European media companies through Atomico. The venture fund has put money into video upstarts Deca, WooMe and Seesmic, as well as the music site Last.fm, which sold to CBS for $280 million.