I've been a long-time reader and sometime contributor to an online discussion group on medieval genealogy (SGM for short). It's an interesting place. Sociologically, you've never read so many rants by so many people on such a narrow topic. If there is a such thing as a genealogical pissing contest, SGM is it. However, you need to treat it like I do. It's a bar fight that you watch and ocassionally, someone throws a full bottle of beer. You catch it and voila--free beer. Meanwhile, the brawl goes on and you duck the chairs and other flying debris. That is to say, there are some marvelous researchers out there posting new information. You just need to know which ones to read and which ones to avoid.