Looking at Who's on-line and filtering it to Guests, it seems it's probably this thread they're looking at: http://forums.bit-tech.net/showthread.php?t=130825 - 'RealLife Vs Crysis Graphics'
haha. This is interesting: (19:39, Monday 4th Feb) Currently Active Users: 841 (119 members and 722 guests) Sam
Maybe some site like Digg has linked to that thread and people are clicking the link and ending up here. Can the mods see if a number of the guests are all from a common source or something?