Find out more after the break.
After making a connection with someone, each person receives a link back to the other's profile page through Hashable. The iPhone app works with your phone's contacts, and makes it easy to introduce two people in your address book or record a connection, and allows you to search through past connections by hashtag. These connections can also be shared on Twitter, or you can choose to keep them private.
It's an easy-to-use way to keep tabs on whom you've met, where and why you've met them, and any other important details. The app is available for free in the iTunes Store.