It seems Google have tweaked their algorithm a bit, resulting in several high profile webloggers losing their top ranking positions for a search on their name. Scott Andrew summarises the situation nicely:
So now a number of people are screaming about how Google screwed them. To which I say: whatever. Google is supposed to return relevant results to your search, not just the most popular or linked-to. I mean, why on Earth should I be ranked above McCloud, Orson Scott Card and Coretta Scott King? Because I write about bees on my website?