Basically says it by itself. Just come up with a random compliment (whether it be hypothetical or what) and post it here.
Here's an example:
*User 1 posts with an avy of Knuckles*
Knuckles could be an easy night guard, and that's why your avy owns big time.
*User 2 posts this comment with a Wii avatar*
The Wii is awesome, which means your avy is, too!
*User 3 posts this with another avy*
And it goes on from there. 
Start with mine, and then do it to others.
Knuckles has no pupils. Thus making it possible for him to look through walls and clothes.
An awesome power (which I would love to have). That's why your avatar is awesome xD
Nice Trauma Center avatar, no idea who the characters are, but still.
I love hot nurses, I wouldn't believe it if anyone didn't.<3
Whoo! It looks Oricimaruo! Awesome. I love it. 
Nice Wind Waker avatar.
Besides, it's Alucard from the Hellsing manga/anim?. By far one of the most developed character in anim?/manga history.
nice hair the shirt almost matches the bricks in the background
Its classic xD
Its my MapleStory dude! =D His current weapon is the Fusion mace. Once he becomes a second job advanced Warrior, I will choose the Swordman class and I will use a sword =D He is kickass, really.
Got a wierd avvy... I don't get it, but if I did, I'm sure it would be funny =D
Doctor Eggman!
Wrong Sonic! Im Not Eggman Im Eggman Nega!!!!
Omg!!!
Nice cat avvy. I can't remember what show that guy was from, but it was a goodie I do know that!
It was made by a mod and modz pwn. So the avy does too.
...o_O
I like it, but its so...haunting....SCARY STUFF RULEZ! *thumbs up*
Chibi Link is chiiiiiiibi.
XD
Cats rule! That one looks like he's a gangster.
It's Top Cat from the Top cat series back the '60s.
O_O;
He still looks like a gangster. 
I love your Avatar, reminds me of the old times =D
I despise the Maple Story MMORPG game. Seriously. Pretty neat midget, though.
nice use of a cartoon caracter ^^
