TechCrunch founder Michael Arrington notes the launch of European blog netowrk MyKinda with a swipe at MyKinda's competitor BlogNation. He published emails sent by BlogNation founder Sam Sethi, a former TechCrunch writer, to Blognation's employees and potential venture capitalists. Why? Well, there's bad blood here. And we're not talking about Sethi's feud with Arrington, either.