That was workable only while the site was below a certain size threshhold.
Much like how it started off years ago with full-text search using a LIKE clause in the queries, but they figured out very quick (like 50k messages into it), that that wasn't workable.
I think it's due to the size, Tim. It was killing the database server (timing things out) to do it the old way.
What if I put a link to the Advanced search on the output screen of any search. Maybe if not too many variables I could simply add 'Search for XXX in 2004/2003/etc'