1) Share with pages in your niche AND that have a similar amount of Likes as you. Face it, the million Likes Goliath pages aren't going to share your 200 Liked page that has no activity what so ever. Then again, if you are smooth and play your cards right, you just might strike gold. I recently got a page that was over 10 times bigger than mine to share, but that part, you'll have to figure out yourself 2) Look for pages where people are asking for shares. They already understand what they need to do, so it's easy to set up with these pages. 3) For the pages that don't know what the hell S4S is, talk to them, let them know how it works, and even offer to share first so that eliminates the whole idea of them not trusting you. 4) Profit. I mean, you are monetizing your Facebook page ... right?
the first post says it all. Addmefast and anything else won't get your fans on your niche. But sharing and doing hardwork will get. If you just want the number of likes to be more then social exchange is good. But if you want the conversion to be big, HARDWORK IS NEEDED always