http://www.reddit.com/r/Minecraft/comments/12gtza/several_minecraft_wiki_sites_are_blocked_by/ It's pretty much this, and the g or ff means google chrome and firefox "Due to an advertisement issue we're currently seeing the following error message[...] Do not worry! This issue is being investigated, it will be resolved as soon as possible. Sorry for any inconvenience, we love you!"
Link em this maybe http://goo.gl/738Ni (https://docs.google.com/spreadsheet...UM4Zjh1S2tCaGNHVldjdmc&hl=en_US&gridId=0#edit)
The problem isn't with the wiki/forums, it's with Curse letting infectious java banner ads show up on their affiliate sites. Wouldn't be the first time advertising has been used to spread malware.