So I tried to view a thread and this came up - Warning: Visiting this site may harm your computer! The website at forum.grasscity.com contains elements from the site blog.nitrousa.com, which appears to host malware – software that can hurt your computer or otherwise operate without your consent. Just visiting a site that contains malware can infect your computer. RUN FOR YOUR COMPUTERS LIVES!
Yeah, thats all it is. GC doesn't harbor any malware knowingly IN FACT, if you could report the post that brought up said malware page we could get rid of it.
http://forum.grasscity.com/general/368665-douchebags.html it was on this forum, i dont know which post