I did some "blanket" redirects to sub directories that no longer exist, etc. These * redirects catch a lot of the individual items and cut down dramatically on the numbers coming in. A lot of URLs I'm finding even with my old vB forum, never even existed and I am not sure how they even got started. For example I have some wordpress-related URLs and I've never installed/integrated wordpress on either my vb or XF forums. I also get some random URLs relating to some furniture store in Wisconsin ;-)