facebook app in samsung galaxy 3s

If you access Facebook via browser, then you can get copy paste. Although not really sure what one would need copy paste for in the Facebook app, unless maybe you want to share something someone else shared. If its a picture, or link, open it then press share. If its a status quote, its a little more difficult. You can use alternative apps like Friendcaster as your Facebook app if you prefer, since it has more features. Personally I just use Tweakdeck with Facebook enabled. I can share other people's status posts via that,