"the htaccess checkers"? Then they must not be sending a referring url is all
I'm not sure if it's 100% safe to assume that since fukser shows up in your logs that it's sending referring information, but it's probably 99% (I'd guess).
So chances are that even if an htaccess checker is allowed in, then you're ok.
Try testing it by adding the htaccess checkers domain to your htaccess, then check it, hehe
I've looked at the fusker site and although I saw them linking to a gallery or two, they didnt hurt me at all so I didnt bother to block it yet.
Maybe when I do, I'll let them link to html, but for jpg/gif I'll have it load up an image advertising my root url(s), hehe
