Situation: when I look in the statistics for one of my sites, I see it allegedly gets traffic from some 'bad sites' (poker, adult, things I don't usually work with). Given the fact the site is on the web development niche, you can understand there's not good reason to be linked from on those sites. If I do actually go to that site there's no visible link to mine. My problem would be that I wouldn't like to "accept" this linking. Is there any way to ban these links to my site? .Htaccess? or something like this? Thank you in advance for your input.