Text enforcer hands out heavy fine: "One of the chief complaints was that one consumer had sent the text 'Stop sending me this message’. The rules are that the Stop command should be interpreted as an indication that the recipient doesn't want to pay for anything else.

Summit's response was their software had seen the word ‘messages’ and interpreted the letter ‘a’ in that word as attempt to answer a multiple choice question where ‘a’ happened to be the correct answer. Yeah, right."

Interesting, and serves as a reminder that people see text messaging as a conversational medium. Whilst the logo and ringtone industry - and TV voting - might have done a fair job in training folks to use properly keywords to talk to SMS services, there's still a need to handle, or at least attempt to account for, the vagaries of everyday conversation if you're building these services.