I’m being besieged by spammers and have been forced to crank up the defences, with the inevitable “collateral damage”. What I’ve worked out so far for those who want to avoid this category:
(1) Don’t use lots of hyperlinks
(2) Send from a regular working email account – Spam Karma doesn’t seem to like anonymisers and so on needful things dvd download
John Quiggin 
Are you getting comment spam, or trackback spam? Trackback spam has gone crazy in the last couple of days.
Trackbacks aren’t working at all. I think my host may have turned them off.