Allow a "silent" check option, which won't post your check to linked Social Networks.
I don't always want to tell the world I just checked a movie, whether it's because it's a movie I have already seen ages ago and just remembered to check it, or simply because I don't want to spam my Facebook / Twitter with a 100 checks of shorts.
It'd be nice to have a way to check a movie without posting it to linked social networks.
I had the same problem, but fixed it by authorising iCheckmovies to post to Facebook and that posts like that are shared by 'Only Me'. When I want to share them to people I change that status on Facebook to Friends, Friends of Friends or I share it with a couple of persons by changing it to Custom.