[Sorry this is a little off-topic, feel free to reply by private email.]

SMS spam. 

List most spam, it shits me. However it is much more annoying than email
spam, as it is intrusive and (as far as I can see) impossible to block.

Is there any legislation, or just the toothless voluntary code
suggesting that "opt-out" be available? My number is already on the DMA
do not call list.

Lara