Like many others I have had regular referral spam recently. The way I first found out they were spammy was by clicking on them. So for some sites, now I know.
But is there any way (except common sense...) to tell who is spammy without following the link?
I know that for email spam there are blacklists kept by ISPs, and they share info about this.
Does anyone know of any site on the Internet that lists spam referrers, so I can look up without been 'seen'?