lucy24 - 8:43 am on Feb 1, 2013 (gmt 0)
Uh-oh, all one site? Are you on speaking terms with them? If so, sit down and see if you can pinpoint the problem. It's probably happening with their links to other sites too.
When these requets arrive at your site, one easy solution of course is to do nothing. It's their mistake, not yours. But if they are legitimate links that might have legitimate humans attached to them, you will want to do something about it.
%E2%80%8B is not-- luckily-- the BOM. It is "only" the zero-width space. (Q: Why would you want a zero-width space? A: It's the plain-text equivalent of HTML's new <wbr> tag, meaning "you can break here if you want to". It may also have meaning in scripts that use different letterforms depending on whether you're next to a word break.)
:: wandering off to refresh memory on how to deal with invisible characters in mod_rewrite ::
:: looking vaguely around for g1 or someone similar whose memory needs no refreshing ::