I checked Yep that is what I did I whitelisted the index htm most editors will not figure out that that is the link to use in their attempts moreover XLinkBot will revert if they manage to do it and it should be blocked by an abusefilter anyway have not tested that but it works fine on other links It is indeed not a reliable source but a kind of must have external link on those two pages per WP ELYES I hope this explains did you see abuse somewhere now