FuturePost

You're dying to post this funny post, but something's come up that makes it inappropriate?

Or, you just posted something funny, and now you can't show your deep and serious thinking processes.

FuturePost to your help. Will post your posts in your name at a future time when its much better. Will give you advice about the post (too long... too short... don't use those words when your friends are such and such exedra exedra. Ax the FuturePost community what They think before you post it.

Of course, you sign in to FuturePost with your real credentials but publicly, on the site, you are only known by vague descriptive attributes of your personality and friends.