SPAN style="DISPLAY: none" spams

[Chris Fortune]

been noticing well formed MIME mails that are defeating bogofilter lately, with scores around .3 :



text section:
lots of innocent text

html section:
<SPAN style=3D"DISPLAY: none">lots of innocent text</span>
 some spam<SPAN style=3D"DISPLAY: none">lots of innocent text</span>-ish text.




mostly innocent text in these mails.  5kb to deliver a one line "cheap meds" spam