I get spammed often enough (Score 1)

I'm in australia and I've changed phone networks a number of times (and kept the same number). I get an sms from telco's about once a month telling me about their great deals. Or even websites that support mobile features have sent me messages - got my first probably five years ago. In my opinion that's already too much. Not a pre-emptive measure at all. It's just not as bad as email yet.