Calacanis Threatens To Sue Arrington Over TechCrunch Acquisition

Jason Calacanis, the CEO of Santa Monica-based, is threatening to sue TechCrunch, over TechCrunch's sale to AOL last month, claiming breach of fiduciary duty and constructive fraud. The legal letter and documents were posted by TechCrunch early this morning. In a long diatribe over their estranged relationship, TechCrunch's Michael Arrington says Calacanis wants a piece of the proceeds from the sale of TechCrunch, related to the now-defunct relationship between the two on the TechCrunch50 conference. Arrington and Calacanis had joined together to launch TechCrunch50, a competitor to the DEMO launch conferences, back in 2007.