I have an email on a .com domain I naievely used on the newsgroups a few years back for ~12 months unprotected - that gets about 30 spam messages a day. My surname.co.uk address gets a couple a week - I am pretty careful what I do with it and I think .co.uk addresses are not used by US originated spam, which from my general observation, accounts for 99% of all spam.

At work I check mail on a couple of domains we nabbed from a local failed .com company - that gets about 300 spams a day and well over 800 every weekend - of all types!

Gareth