what Facebook has is really difficult to take away. They have built their own monopoly, and everyone is free to try and shoot them from their perch, but what a struggle it will be until something simple yet highly innovative comes up to threaten them. You need only look at Google+ to understand that people dont need more than 1 "friend manager". And so long as the people are on Facebook, no other friend manager is going to cut in on the market. Alot of people dont care about free games, apps, etc. They care about the bare-bones service - keeping up to date with friends and family. Facebook got their first and it will be a long, long time (if ever) that someone else takes over imo. So its about how they drive revenue with what they have, and grow numbers.
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