Never clicked on a link, it pops up when I open a THREAD, not a link, links in GC are like prostitutes risk yourself getting who the fuck knows (from them dirty members of course many are clean )
Offsite images embedded in posts are links... Most of the virus warning things I've seen on here are pics being linked from sites that have been associated with malware in the past...they are generally harmless unless you go looking for things...stay on GC and all should be good...