Tricks and Traps of Using Real People in Your Writing, Part 1: The Right of Publicity by Helen Sedwick explains if and when writers can model characters after real people and name names without getting sued.
"Writers change the world one reader at a time. But you can't change the world with a book that's still on your hard drive or in a box under your bed. This blog exists to help you get that book into people's hands." —Joel Friedlander