I've been thinking about something that covers Early Christian stuff for a while now so that I can move all the round towers and high crosses etc. off megalithomania. Making it a contributionary (is that a word?) site would seem sensible.
There's definite funding routes if people are willing to put up with (appropriate) advertising and a shop selling celtic brooches n stuff for instance. I certainly have the server space to do it, but the main thing is the time!!!!!!
The megalithic stuff is my first love and so the time comes easy. There is a definite need for a site for this sort of thing though, covering say the year zero to the 12th Century (to get all that lovely Romanesque stuff in there). A simple themed photo gallery would be no problem, but it would be much better to have it all inter-linked and structured in a similar way to TMA or the Portal.