I am using facebook comments on my site.
Normally my entries have a format like (since this was originally an EE1 site (now ee2), URLs have a trailing slash on them via htaccess):
http://example.com/posts/view/title/
However it seems facebook comments generate links like this (your forum is blacklisting this url so i added a space):
http://example.com/posts/view/title/ ?fb_comment_id=fbc_ZYXXXXXX
That query string causes EE to display a 404 page.
I can’t find anything in the templates that, and i assume it some kind of config issue?