I copy features from other sites all the time. If you have a good idea, don't be surprised if others replicate it, especially if it's technically easy. What do

I copy features from other sites all the time. If you have a good idea, don't be surprised if others replicate it, especially if it's technically easy. What do you expect? Facebook will see it, say "That's cool!" and then offer you a 20M buyout? Hell no, they'll just take a week, build it in-house, and move on to the next feature.