1. You refer to yourself with an @ symbol in front of your name.
2. You buy the personalized license plate: BRN2TWT
3. U rite in shrthnd
4. You look on Twitter to find out what your spouse has planned for dinner.
5. Your kids know that you are almost home from work because you just checked in on FourSquare at the gas station down the street.
6. You realize you have accounts with not only Facebook, LinkedIn and Twitter, but Google+, Foursquare, Gowalla, Yelp, YouTube, Flickr, SlideShare, Digg, Scribt, Path, Ping, Focus, Quora, MySpace, Orkut, Chatter, Flipboard, Zite, Discus, Evernote, Instagram, PaperLi, FriendFeed, Tumblr and....
7. You actually use Apple's Ping.
8.You suggest to your child's teacher that she use Foursquare checkins to take class attendance.
9. You not only know who @scobleizer / +Robert Scoble is, you care.
10. You actually enjoy all the photos of sushi and cat videos being posted on Google+.