I find add me fast is the best.. However my issue is now that I have been using it a while its a lot harder for me to build up points for my fan page and most of the facebook likes people have set to 9pts a click.. so once you use all of the 9pt clicks you have to work on getting a bunch of little ones to build any type of bank.. however if you click 20 sites a day you get free 100 pts.. and I refuse to pay the outrageous amount of money to buy the points from the site.
You like hits I find is best if building a twitter.. Which I have recently been working on for the side..
I also like social media network explode? thats been doing good however the point system is soooo broad that it is difficult to use.. i have a banked over 20,000 points but the points range from 1pt-500pts.. so its very hard to continue to get likes.. i have no noticed any likes from them in a very long time..
I also sometimes use tweib and put a couple hundred points on there every few weeks as their amount of users is no where near other sites..