Now that I've swapped my Windows Phone for a Nexus 4, I've discovered what a mess my Google Contacts are in once synced to Android and enabling Google+ to supplement contact data. It didn't matter too much on the Nexus 7 tablet, but on the phone it's more frequently used, so having the same contacts appear three times is a problem!
It's 2011, seemingly "the year of Social". We have Facetime, Google+ Hangouts/Huddles, Facebook video chat, Twitter and iMessage built into iOS, Messenger built into WP7. It sounds like we're making great progress in improving the way we can communicate with our friends. Super!