This also wouldn't address the wide variety of other non-english songs that people use. I've seen videos with Russian, Hungarian, Italian, Polish, Korean, Chinese, Finnish, Swedish, Spanish, Japanese, and many more. Not to mention that getting correct spelling for these songs and artists is probably asking for a miracle considering some people here can barely spell words in their native language.
Plus, there's a giant chunk of videos that use movie trailer audio, TV commercials, spoken audio, and other sources instead of songs. And don't forget the (usually horrible) renditions of songs used in the Iron Chef Idol MEPs
'sung' by the participants. I kid, some performances are pretty good.
Having said this, I still support something to be done to clean up the more egregious errors (Likin Park, Lincoln Park, Linken Park, -linkin park-, **Linken Park**, **Linken Park**, and other similar misspellings, plus the variations that include the song name and/or the album name with the artist name). The scary thing is, doing this will probably add about 2000 more entires to Linkin Park's over 5000 AMV count.