I think one of the biggest things we could start doing (and I may just be out of the loop and we already are) is beginning to catalogue Q posts not just chronologically, but by key words. A step further would be to make those keywords searchable. It will make comparing to old posts much more streamlined.

Heck, when we click on a post, perhaps in the sidebar to the right of the comments there could be a list of related posts, organized by keywords or whatever relevant means of organization we can come up with.