What I like about Switched: sleek UI, a cool approach to listing your interests. As a way to link people to a detailed profile of yourself from other websites, it’s fine.
As an actual social app, I don’t understand the philosophy behind “matching”. It seems to suggest people based not only on which interests they’ve marked, but also matching which side of the interest… but the point should be to match people who have opposite sides of the same interest. It’s also terrible to try and find people who are nearby, as my suggested matches are all people who live on the other side of the world. Finally, message notifications are spotty and as a result, people never respond or hold an actual conversation.