We had some pretty clever comments at Fool's Gold. Since we no longer have an active rep system, I hereby bequeath any that people may approve of to the use of EoFF. Granted, these are five years old or more so a lot of them are no longer topical, and several of them refer to in jokes that are FG-exclusive. The negative ones probably don't matter either because negative rep isn't enabled here.
Unfortunately, the negative comments were generally far wittier than the positive ones
(SPOILER)Below -40,000: User is responsible for AIDS.
-40,000 to -30,001: User stole my smurfing cloudsong.
-30,000 to -25,001: User does not care about my smurfing cloudsong.
-25,000 to -20,001: User is the most foul, insipid, lame ass mothersmurfer in history.
-20,000 to -15,001: User has a tiny penis.
-15,000 to -10,001: User is less popular than Tedius Zanarukando at a women's rights convention.
-10,000 to -7,501: User is more annoying than Tidus.
-7,500 to -5,001: User just smurfing BLOWS.
-5,000 to -4,001: User makes Michael O'Connor look like an upstanding, intelligent human being.
-4,000 to -3,001: User makes George W. Bush look like an upstanding, intelligent human being.
-3,000 to -2,501: User is a skidmark in society's collective underwear.
-2,500 to -2,001: User is probably a total 


.
-2,000 to -1,501: User does not care about black people.
-1,500 to -1,001: User is less welcome than a reggae band at a KKK convention.
-1,000 to -751: User was responsible for Trotsky's assassination and the ascension to power of Stalin.
-750 to -501: User knows less about everything than Ted Stevens knows about the Internets.
-501 to -401: User sucks at posting.
-400 to -301: User and the stuff that falls out of my asshole bear a suspicious resemblance to each other.
-300 to -251: User kinda smells like that dead bird the cat dragged in last night.
-250 to -201: User seriously smurf off you're going to a dick.
-200 to -151: User must construct additional pylons.
-150 to -101: User probably needs more cowbell.
-100 to -76: User ought to hit the weights.
-75 to -51: User is a bit of a poofter, eh?
-50 to -26: User could use some help in the PR department.
-26 to -11: User still has much to learn about The Force™.
-10 to -1: User might be a bit of a troublemaker...
0 to 9: User is...wait, who the smurf is this person?
10 to 24: User might not turn out to be a total wanker.
25 to 49: User is about to escape from the cold, hard grasp of mediocrity.
50 to 99: User sucks less and less with each passing day.
100 to 149: User has goodhair.
150 to 199: User knows a hawk from a handsaw.
200 to 249: User appears to be well on the way to becoming a skilled guitar shredder.
250 to 299: User will become famous with enough bribery and/or sexual favours.
300 to 399: User stays crunchy in milk!
400 to 499: User looks pretty good in a jockstrap.
500 to 749: User wears the mighty fez with pizazz!
750 to 999: User is the poster with the most...er.
1,000 to 1,499: User is total class.
1,500 to 1,999: User has class flowing out the ass.
2,000 to 2,499: User is a fine, upstanding (heh heh) poster.
2,500 to 2,999: User glows in the dark, all sparkly-like!
3,000 to 3,999: User is well on the way to becoming a true Viking warrior.
4,000 to 4,999: User makes me happy in the upper-pants region.
5,000 to 7,499: User must be doing something right.
7,500 to 9,000: User ist Krieg.
9,001 to 9,999: User is OVER NINE THOUSAAAAAAAAND. In reputation points.
10,000 to 14,999: User has properly bribed the people of Eyes on Final Fantasy for reputation points.
15,000 to 19,999: User is smurfING AWESOME!
20,000 to 24,999: User could outshred Yangxiu Maofei with both hands tied behind their back.
25,000 to 29,999: User is worthy of being the sixth member of Dethklok.
30,000 to 39,999: User is a grim, frostbitten Viking warrior of whom Odin himself would be proud.
40,000 to 49,999: User wins the fora.
50,000 and up: User will sup with the finest Nordic heroes at Valhalla.