At 13:58 17-08-2007, Chris St. Pierre wrote:
>That's an interesting idea, but it
>a) is probably going to be quite resource-intensive;

Not really.

>c) requires competent fuzzy matching so that, when a user sends mail
>to "Chris St. Pierre ", it doesn't flag it
>as spam because my "real name" is Christopher;

That's the main problem. There are also misspellings which are
difficult to catch.

>d) is prone to FPs, since its the clients who add that name, and it
>could be literally _anything_ ("chris", "some guy", "", etc.) without
>being spam; and

It could be used for negative scoring when the client hits reply to
answer your message. That would also let some spam through though as
some use the real name.