You sure do, as long as you're a gamer! How to discover it and keep track of it? The smart guys over at gamerDNA have the answer. The service is under heavy development and it's said to be still in beta, but there's sure LOTS of stuff you can do already and new features / improvements seem to be always around the corner. 

Here is my public gamer profile, if you wanna have a look. After you do so, be sure to sign up for the site and give it a try. Built by the joining forces of GuildCafe.com and 360voice.com, gamerDNA kinda defines you as a gamer, based on past, present and future experience. It lets you share your gaming histories, preferences and identity with others, make friends and a whole lot more. Trust me, it's a lot of fun and it really looks promising.

Quoted from the website: "You’ve earned in-game accomplishments and acquired skills. You've made personal alliances and a name for yourself and along the way you've developed a unique set of interests in games. Your GamerDNA can capture all of this and more giving you one centralized presence for all your gaming connections, credentials and interests."