TWiT, aka This Week in Tech, is suing Twitter. The well-known tech netcast says Twitter has broken a number of written and oral agreements and is infringing on its trademark. The two companies started up around the same time in the mid-2000s, with Twitter co-founder Evan Williams telling TWiT's Leo Laporte that Twitter was simply a "text-based microblogging service". The two informally agreed that, despite the similarities in their names, their platforms were fundamentally different and were happy to co-exist on the condition, the lawsuit alleges, of "each company continuing its own unique distribution platform." As far as TWiT is concerned, that's no longer the case.