Avenues makes it easy for strangers with a shared interest to interact and become friends. It’s the place you go when you buy something new and want to talk about it with others. It’s not only a way of being reminded when a new episode of “Mad Men” is on, but a better place to discuss it than Twitter. It will function as a dating service without feeling like one. It’s ideal for talking about products, pre- and post-purchase. If you’re associated with something in some way, you join its Avenue.