Sean, Help with Redundancy...
Can you setup an automatic e-mail that goes to every "New Member" and explains the search feature thoroughly. Possibly setting it up in such a way that they cannot start a thread until they have conducted at least 10 searches? Something that increases the profile of the search function and leaves the threads for some newer topics.
This could prove to be invaluable to newer members, helping them or mandating them to familiarize themselves with the Search key. It also may help to eliminate some of the redundancy in this forum at least?
Just a thought...
Luck has nothing to do with it.