One of the residual problems of the server migration was that my multi-domain search using HtDig no longer worked. I didn't want to set this up on the new server as this tool is outdated and I was sure there was better around. I found Google have updated their customised searches and now provide exactly what I needed.
The brilliant thing is that you can feed the results back to your own pages and thus not run the risk of losing visitors.
The example in the above link was to an extent a test system and the search page on the Cactus-Mall will shortly be fixed and fully functional agian.