I've actually quite enjoyed it. Like some others have said I refuse to pay for anything. The energy recharges 1 point every 5 mins and sometimes I've used the energy limit to stop myself playing too long... only to find I keep collecting the stuff so play much longer than intended.
I also refuse to bother friends who are not playing the game with any posts to do with it (I set privacy settings to a friend group who are all playing whenever I post game updates). To begin with it was difficult with only one other friend playing (as I must have discovered it on the first day it was on open Beta) however some of my other friends discovered it on their own and now it's much easier and I'm finding it fun to keep sending them what they need and getting what I need from them.
There have been some glitches, one of my friends is getting far more than me, but generally it plays well and is addictive.
The last couple of months I've not played TS3 because the loading time means I feel I've got to be ready to settle down to a long session of playing to make it worth waiting. I love the game, just haven't had time. With Sims Social I can dip in quickly and of course then end up playing for ages anyway and suddenly realising I've lost the morning to playing LOL.
Rosie