I was getting quite a bit of spam but it seems to have slowed down recently (perhaps it's partially due to the PHP script I just installed on my web page with an infinite amount of fake adresses - that'll teach the spambots :-D )
I haven't had any mailing lists like some people though, so it doens't look like I've been targeted. IMO if you find out who this was for certain and it is as serious as it's looking then they should be IP banned - but it's Wayne's place and his decision.