The discussion on that last thread is interesting. Somebody put together a list of all of the marriages that came from people who met on that forum, and it was not a short list.
From a quick flick through based on that link, the issue seems to be that the forum code is bespoke and written in perl, and the environment (apache & mod_perl, nothing great, nothing terrible) is obsolete and nobody who's volunteered to port it in the past actually followed through.