talonman, run a check on the database for any 2 games with matching names in the NA field. Then if 1 has sales and the other doesn't, delete the one that doesn't. If they both don't or do have sales, then report both games for a mod to deal with. If you do that, then post it on the mod forums, we should be able to take care of it, and that should easily fix the "hard" issues.
The other ones like misspellings will be harder to find.