OpenID was suggested, I think :=)
OG
Still I second Chris Lang in that a Public Google Profile is just a good and easy way to show one's identity on the Internet. It doesn't require much.
Why? A strange question. Don't you want people to know who you are, to be able to decide if they are interested in following / contacting you? Don't you want to meet interesting people online and to find new resources? If you don't, why to use Web at all?
Vladimir Kelman
https://profiles.google.com/vkelman/
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