I could point at the "main text flow" (usually, a table cell) and say "this is ham", and I could point at a block of "sponsored links" or "text advertisments" and say "this is spam".
The granualarity of content is usually a range of table cells or a frame. You can guess what's spam or not by page location and/or content.
Get started people! :-)
Done.
http://www.mozilla.org/mailnews/spam.html
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Steve C. Lamb | I'm your priest, I'm your shrink, I'm your
PGP Key: 8B6E99C5 | main connection to the switchboard of souls.
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