This is a suggestion to those developing SA. Or maybe it already exists and I just don't know it.
There ought to be some sort of "if / else" type construct that can be used for creating rules. For instance, I just got a spam that triggered the following:
Meta rules do these kind of things.
Now, if there are 30 random words, there are probably also 13, and also 10. If there are many kinds of drugs, there are probably a lot of individual kinds of drugs. So once you have a major hit, why bother trying for more minor versions of the same thing that are obviously going to hit as well?
Actualy, the manykinds drug rule doesn't have any regexs in it.
It's a meta rule, and is based on adding up all the single-drug rules :)
Take a look at the bottom of antidrug.cf. Antidrug uses meta rules extensively to avoid repeatedly searching for the same strings.
