The server won’t be moving now – I have found that the database is way too big to move to Google AppEngine and I’ve tracked down one of the reasons why it was running so slow and eliminated that. I am aware there is some weirdness going on that requires investigation such as some pages showing differently if you’re logged in versus not. I will look into these as soon as I can.
I will still be adding the ability for Supporters to have their own domain name attached to their diary, as that doesn’t rely on Google.
I have moved some of our other sites onto a new server and thus spreading the load out a bit better. This has some infrastructure benefits as well so hopefully things will improve once I can spend some time sorting out the underlying issues.
Thanks for your patience everyone!