Sex toys aren't exactly something people discuss at the dinner table. That doesn't mean they're particularly scandalous. "I can't imagine somebody being in a sexual relationship for a long time without exploring sex toys," says Ava Cadell, a PhD in human sexuality and founder of Sexpert.com. "I think it's a very unselfish thing to bring into the relationship." As a sex counselor, Cadell discusses and recommends sex toys on a regular basis to her clients. Now, she's shared some of her knowledge with us.