well when I adopted Cookie, no one called...but of course when I got Emma and Louise I was fostering them at first, so I was in contact with the rescue group, so I don't know if they would have otherwise or not... they should and it is nice when they do, it shows they really do care about where the kitty went to.
I am going to give volunteering another try next year, and I think I will call anyone that adopts kitties when I am at the adoption site.