Highly Targeted Spam?

It’s probably just an illusion, but I seem to be getting targeted spam lately.

How targeted spam might work: A crawler goes out and indexes an email and context. It then uses the context to generate a relevant spam title and keyword text that can then be matched to relevant messages from a database of client advertisements. The filter-defeating cocktail is then shuttled out to unwilling recipients across the web.

This is horrible. It’s like adsense for spam.