It seems Guitar Hero World Tour isn't the only game dealing with copyright infringements. As Kotaku reports, complaints are spreading across the official Little Big Planet forum, with players' arguing that their custom levels are being "moderated" -- or, to use less euphemistic language, "deleted forevermore" -- without warning or much explanation from Media Molecule. But there seems to be one common thread tying together many of the deleted levels: use of copyrighted materials.