Adam,
Any time a spam strategy is predictably imperfect, that is a specific
type of spam gets through, you've essentially created a scenario in
which you have a strong evolutionary selection towards that type of spam.
And so the percentages will start to grow as more spammers use that
successful technique.
The question is:
1. Is spam evolutionary, that is does it evolve; or
2. Is it brought about by Intelligent Design...
DSL
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