Obviously, someone wants to 'be' you. I wonder if anyone wants to impersonate an architect though???

Some parts of the forum can certainly be found via the caches of Google, Bing and others. I found and saved page 1 of the 2007 Longstroke DS/ID census, but embedded images are lost and it doesn't give the thread and post number. It does however, give the date and time of the post, so it may be possible to build a database of posts from that information.

Another possibility is to work offline in your browser and go through your AF history to display what's in the cache and then save anything important / useful as a complete webpage with images. Try it soon, before the browser clears it's cache.

Thanks to Aus-City for helping.