Your next SMS will probably be around longer, and remain more legible, than your tombstone. For, unlike your tombstone or even your mortal coil, your texts may be worth something.
For startups, SM is now crucial: it has never been cheaper and easier to reach one's customers. Entrepreneurs should thank God for Twitter, Facebook...
SM is an abbreviation of both stock market and sadomasochism-- and there are those who think they are one and the same.