Wow.... interesting thread! Just my two cents -- I was paid $2-$3/hr. (in the 80s) and I took care of the kids, bathed them etc. (if needed), helped w/ homework, fed them, put them to bed. After they went to bed, I cleaned up our dishes, put their dirty clothes in the hampers, and general straighten up. However, I usually got the KIDS to help me pick stuff up BEFORE they went to bed -- just seems to make sense -- afterall, THEY helped make the mess.
Anyway, after bed I would either talk on the phone w/ friends, watch tv, or read. All of which I had permission to do from the parents.
All of that said, when we have babysitters my primary focus is that the kids are safe and happy. Bedtime is a big issue -- they don't nap so they have to go to bed early. If the dishes are in the sink and not washed, I don't get my panties in a wad. And, as far as I am concerned, after the kids are in bed, play on the computer, watch tv, talk on the phone, whatever you want to do (within REASON!