I know of a Christian forum that has levels of crit. When you post, you declare (simply by typing the numeral next to your title) how serious you want the crit to be.

"1" means be gentle, this song is being written for fun or personal expression
"2" means be objective, this song is being written for use at a party, school or church gathering, give to a loved one, etc
"3" means be brutal, this song is being written for the commercial market

They also have (you'll LOVE this 'un Tallguy! [Linked Image]) a means for keeping up with your crits. You get credits for each crit. They are right next to your name for all to see.

You earn 5 credits per crit.
You PAY 10 credits per post.

How this is all accomplished automatically is way over my head, but I think it's an exceptionally good policy.