"Great Sites" links

You've probably noticed by now the links to a bunch of great sim sites in my sidebar. I'm not sure what the etiquette is regarding linking to someone's site, so if I've linked to yours and you would rather I didn't, please let me know. I apologize in advance if I've offended anyone. I also took the liberty of creating a very basic button for a site if I couldn't find one. If you have something you would rather me use, again, please let me know.