Wuppertal based gleeme is the latest entrant in the single identity aggregator space. This one comes with a cool stamp.
Gleeme simplifies the aggregation and sharing of your different online user profiles. Your personal Gleeme page will become your online vcard which you can pass to anyone by simply sharing one single link.
When you sign up you can tell gleeme your usernames for an impressive list of services (more than one hundred), your IM accounts, geolocation and other contact data. gleeme then gives you an ID and creates a profile page.
You also can purchase a stamp for 10 Euro, currently they are shipping within the European Union only. The idea is that whenever you want to pass on your contact information to someone you meet you grab his or her hand and stamp him or her with your gleeme ID before they can object. At home they will be able to look you up based on your ID.
From the tour:
From a sociological point of view it is noteable that this is the second German service which proactively uses numbers as identifiers for persons – a practice commonly associated with prisons – which launched within the last few weeks, see our coverage on IamNo.
gleeme was developed by Marco T. Springer, Florian Maier und Fabian Sauter. The site is available in English, French and German.
(This article originally was written for blognation Germany. Since blognation is gone I have reposted it here)