I just did some reading at the page you linked to (
Bloom Filter) and the discussion of the math that's linked from there.
I was never that fabulous with math, but I think I get it. Seems like a good plan for a very large set. I say do it.
I had never seen the Bloom Filter, it was cool to read about. Thank you!
PS: I found the discussion of the math page to be easier to grasp. It has diagrams.
Update: I was wondering, with the Bloom thing, how do you come up with suitable functions to generate the hashes?
Update: I found this at perl.com: Using Bloom Filters
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