Originally Posted by Alicuza
Made an account just to answer to this:
Facebook integration doesn't bother me, as long as it is subtle, like you suggested. Hell, you can even put more "intrusive" options into the settings for people who enjoy the social aspect of games.
Never make the integration compulsory or design the layout such that I might accidentally press the share button or whatever. I hate it when friends on FB spam me with their achievements, and I immediately block them and assume that the game is utter garbage.
Thanks for signing up just to contribute here!
And thanks everyone for your comments so far. We're carefully redesigning the integration now to make sure we don't get FB rage deleted, and also making sure the social integration we do offer is a useful/fun benefit to the players that choose to use it, and not a cheap bribe.