I know so many forums that would benefit from one of these:

PC Pro: News: Developers tidy up forums with "StupidFilter"

Although I guess seeing this might get boring after a while:

"This comment is more or less unintelligible. Please try to restate it."
"This comment is more or less unintelligible. Please try to restate it."
"This comment is more or less unintelligible. Please try to restate it."
"This comment is more or less unintelligible. Please try to restate it."
"This comment is more or less unintelligible. Please try to restate it."
"This comment is more or less unintelligible. Please try to restate it."
"This comment is more or less unintelligible. Please try to restate it."
"This comment is more or less unintelligible. Please try to restate it."
"This comment is more or less unintelligible. Please try to restate it."
"This comment is more or less unintelligible. Please try to restate it."
"This comment is more or less unintelligible. Please try to restate it."
"This comment is more or less unintelligible. Please try to restate it."