[Aeolun]

Most of those are so obvious you could throw them out with a simple pattern matching scheme. Getting a lot of crap doesn’t really matter if you can filter it all with 5m of work per day.

I need less than a glance at the text on my contact form when I’ve seen the email address.

[HeyLaughingBoy]

Beware the false negative. I'd probably fall victim to a lot of HN users' filters because I have a @yahoo.com email. However, I've had it since 1998 and I'm not likely to give it up any time soon.