Just had another thought: If we can do fan ratings of sites, then we ought have features where (a) old ratings aren't weighed as heavily and eventually expire, and (b) you can change you rating.
I'm thinking that a new fan artist might not do really well on the first few things, but after some practice, feedback, and learning, turn out to be a virtuoso of simosity. It would be very encouraging to watch your rating climb from 4.0 to 9.9!