It used to be a feature here. Users could upload their picture and then write a few sentences about their idea of a "perfect date." Then, other users would rate them 1-10 and could leave comments about that person.
From my knowledge a 'reality check' is what it says it is...
I do reality checks a couple times a day for 'lucid dreaming'.
A reality check determines weather or not you're dreaming.
There are tons of reality checks such as: trying to put your fingers through the palms of your hand; plugging your nose to see if you cam breath through it; looking at a clock, mirror; trying to fly etc etc