Like this If...

I was struck with this idea this morning. A user will post something they like, starting out with with "Like this if..." For example, "Like this if you've seen tree frogs before," instead of making it not detailed enough (e.g. like this if you've seen frogs before) or making it too detailed (like this if you've seen red eyed tree frogs before) Then you'll know people who have that in common with you. Read the first post on the page for further info.