Not very often. I'll randomly get into a creative mood and invent a really pretty ava and just keep it on for months/swapping out some items for another one. I try to think of a new one monthly, although it never really works out. I always feel like it's too generic. However, for Holidays I try to choose/or create an avatar that suits the mood.

Depends. Sometimes I really like my avatar and keep it for a long time, sometimes I play around and find something I like better and change it. And sometimes I buy a new item that I just have to use, so I change my avatar whether I liked to old one or not.

Other than adding onto it from my limited collection, not very often. Once a month maybe.

I try not to change my avatar too often, I noticed a
while back that my avatar never stayed the same :P
mostly because I saw someone with art of their avatar, and I kinda wanted that :>

Some times once a week some times once/twice a day. Also depending on the mood.

Lately it's every time I become active again...which is not often. So about every event with a year gap in between groups of three events?

i am on my third or fourth avatar of the day, too much new stuff to play with

for week xD