ways to react faster to spam attacks

[Arvid Ephraim Picciani]

greetings.
most of the spam we get (like 90%)  is the usual internet noise. sa filters 
them perfectly with 10 to 20 points. 
Unfortunatly from time to time there are waves of very prefessional spam.
I wonder how you react on those.  Do you quickly hack up an sa rule to filter 
by specific words?  Do you have a central repo for rules? 
-- 
best regards/Mit freundlichen Grüßen
Arvid Ephraim Picciani