After keeping relatively quiet for the past two weeks, TechCrunch founder and Silicon Valley kingmaker Mike Arrington issued an exhaustive rebuttal on his blog yesterday to his ex-girlfriend Jenn Allen's public claims that he raped and physically abused her. Arrington's pushback against Allen comes as Gawker has uncovered more detail on allegations that he assaulted another ex-girlfriend, Meghan Asha—including corroboration from Asha's friend and former partner, Julia Allison.

TechCrunch founder Mike Arrington has strongly denied a host of recent public allegations from an ex-girlfriend, former colleagues, and former friends that he has a history of violent behavior toward women. The string of claims began late last month with a Facebook post leveled by his ex-girlfriend, Jenn Allen, who wrote that Arrington had assaulted and threatened to kill her. Gawker followed up last week with a story reporting on claims from a former co-worker that Arrington was investigated by a former employer for assaulting a female colleague, as well as claims from that he threw an ex-girlfriend into a wall.

Facebook hasn't been kind to Facebook investor and TechCrunch founder Michael Arrington lately. The notorious tech thug was accused by his ex-girlfriend Jenn Allen of physical abuse and death threats in a Facebook post last week, as we were the first to report. (Later, in comments on Gawker, she accused him of rape; Arrington hasn't responded to our requests for comment.) Today, apparently in response to that post and the shards of rumor that have begun surfacing in its wake (which we are busily running down), Arrington's estranged friend and former business partner Jason Calacanis has taken to Facebook to reminisce on their relationship and endorse the ugly picture of Arrington that is emerging. It's by no means the first time Calacanis has lit into Arrington; the two have a very contentious history. The post—which doesn't name Arrington, but is obviously and transparently addressed to him—is published below in full.

Tech titan and TechCrunch founder Michael Arrington is known for his virtual outbursts and high temper when it comes to Silicon Valley drama, and his yacht. But an ex-girlfriend now claims that Arrington was violent toward her in real life, and threatened to "murder" her if she told anyone.