WRITE A WILL. Legendary non-sellout MCA stipulated that his music must never be used for commercial purposes. He had it right; if you don't plan ahead, you're going to spend your afterlife selling out in ways you never even dreamed of. Your likeness will be stuck in some awful video game, miming along while a teen belts an off-key Audioslave song through your tormented digital ghost; your most personal poetry will be sold to Nike and plastered on shoes. Get a lawyer, draft a will, and make sure Courtney Love has no access to your estate.
HEY, JUST DON'T UTTERLY DEBASE YOURSELF. If Samsung offers you a ton of money to change your name from Snoop Dogg to Snoop Dogggg to promote a 4G phone, here's what you do: you tell them to go fuck themselves, because you're Snoop Dogg and you already have that much money.