OP's comment may have been harsh, but it's accurate, and you should take it as constructive - you may have a really cool and useful product here, but no one knows about it at first glance. Make your landing page a bit more transparent as to the app's purpose and functionality, and you'll get more positive interest. Don't be sad!
Simple fix: at least place your iTunes description:
"Cloak scrapes Instagram and Foursquare to let you know where all your friends, "friends," and nonfriends are at all times so you never have to run into that special someone. Think of it as the antisocial network."
No judgement on the product itself; I actually find the concept interesting, but I feel that linking directly to the itunes page itself would be more effective.
I can't think of a specific one that comes to mind, but I guess anything fresh in memory will be more likely to tend towards an absolute. As it is, I've revised my comment a few times to be more fair, and have now changed that line.
And seriously, make it so I can see more than just your enormous tagline on mobile. I have a 1080p screen; that oughta be plenty. But literally everything I know about this app was learned from reading derisive comments in this thread.
Thanks for number 1. I read that box several times over and just assumed it was a header. I never saw the cursor blinking until you told me I could type there.
We currently allow you to add any keywords you want. We'd like to eventually allow rather to communicate with things like tweetbot, so tweetbot can just pull from what you hate, etc.
I think what he's suggesting is that a topic-based filtering system would be more ideal than a key work based one. I don't want to have to spell out "block yankee's, tigers, indians, pirates, and giants". I just want to say "block all baseball", or "block all sports", and have the system know that posts about the yankee's, tigeers, indians, pirates, or giants are inclusive in these categories.