Retaggr: Personalized Business Card Creation

Retaggr is an excellent personalized business card creation service, and it's the best one I've found so far in terms of functionality. After registering as a Retaggr user, you can customize your own business card for free, including personal information, photos, blog details, and the online services you use. Once set up, Retaggr will generate a widget for you. Through this widget, you can not only showcase yourself, but your friends can also communicate with you more conveniently. You can even manage and access your online services directly within this widget.