Okay I've read all of the reasoning here for why people are against this, but lets think about it: linking is not illegal, file hosting is not illegal, but hosting a website with the explicit purpose of linking to copyrighted material in such a way that it infringes upon the copyright of the content owners? THAT should definitely be illegal. Don't tell me none of you have ever seen a forum or a blog filled with nothing but links to illegally shared copyrighted material. Heck I've seen several that have explicit categories for things like games on a per-system basis, genres of music, or whatever else. Whether it's for ROMs, ISOs, MP3s, or any other type of file, they exist. Lets not pretend that they don't. You can wear a tin hat and stroke your neckbeard while saying that the problem is copyright law, but realistically, in the world we live in where changing it so radically will never happen, these sites should be stopped. Heck I'd gladly link to at least a dozen that I know of off the top of my head for evidence if it wouldn't possibly incriminate me.
"No, DownloadSomeFreeGamesAndShitOrWhatever.com is totally legal! It's just people linking to stuff! They can't control what people share!"
Think about how freaking ridiculous that sounds. Yes, we should go after the infringers in the first place, but that doesn't mean we can't attack these sites as well. It's not like only one person is allowed to infringe. By hosting theses sites, the site owners are accomplices.