Before the ritual mocking of Ken Rockwell commences...
I'd like to point out that he is just about the only photography blogger who is truly agnostic about equipment.
He is just about the only one who actually uses both Canon and Nikon equipment, and switches among them based on his personal preferences.
Yes, his style can be grating at times, and he's simply wrong about some things (you don't need a tripod!), but he does bring a lot of value to the table.