As far as I am concerned I do have a username on slashdot (the same as here) but I don't post there much.
For those liking a lengthy read (an abstract is available too): THE AUGMENTED SOCIAL NETWORK: BUILDING IDENTITY AND TRUST INTO THE NEXT-GENERATION INTERNET is a paper discussing why consolidation of our online identity is so important. A less ambitious but perhaps more in the mindset of "Worse is Better" project: FOAF.
In reply to What are your other public, online identities? by zby
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