There are two both Lifetime and Daily. Achievements are for the top ten for the day FuBlingee Champion (100 Achievement points) and number one for the day which is named Gauntlet which is only 25 AP. Fubar has it's own math teachers, I didn't hire them.
These are only for the receivers, with no recognition for the givers. That is probably because if there were, people would only gift to themselves to be on those lists.
One big caveat on this. Anyone at any time, may delete any bling in their collection. Meaning, if they bought for themselves 300 or more power ups in a week, and after running them, they deleted, the credits for those bling no longer count toward being on the lifetime list.