Like many others, I have searches set up on ebay, and probably like many others, I often get emails about a new listing which just turns out to be some jerk who'd selling a CD-ROM with a PDF of the manual on for £3 (yes, the very same one you can get from brickset).
Well, I just realised that these violates eBay's listing terms if they are in the Lego category. Specifically ...
"Compilations or information content must comply with our digitally delivered goods policy - including being supplied in a physical format (e.g. on CD), and being listed in the Everything Else > Information Products category".
This is great because it means you can set up your ebay searches just in the Toys and Games catagory and the searches won't pick these up if they're listed correctly. Even better, if they're not in the right category (which none of them seem to be), you can report them for listing policy breaches.
So please go ahead and do so!