The primary feature here seems to be the call a friend functionality. Contacts, taken from the iPhone address book, are sorted by state with the most competitive listed first. For example, my contacts from Virginia, Ohio, Florida, Indiana, and Pennsylvania were listed at the top, while those in Delaware, Hawaii, and New York were listed at the bottom.

An official webpage is available on the Obama website, and it is available through the App Store. Those who don’t have an iPhone should not fret — the WAP page for the campaign offers some of the same features.