I was not a registered user on Stack Overflow, when I posted my first answer on this website. This website suggested I become a registered user. It also created a pseudo-account page (user id 226454), and started recognizing me by a special cookie. I switched to another browser, and completed the registration. In the registration form, I provided the same e-mail address, which I provided when posting an answer in the previous browser. A new user account was created (user id 228365).
The website created another separated account (which is not based on my pseudo-account, which already had 1 answered question). So, my answer is not counted in my new account.
I wish Stack Overflow would recognize me by my e-mail address (not by an unreliable cookie), and attach all my old answers to the newly created account.
I'm not sure if it is wise to scan all your database entries of unregistered users posts, and build a newly created account on top of a pseudo-account if the e-mail address matches, but it would be nice. I think an e-mail address is a better identifier than a temporary cookie.
Please fix this bug to avoid this trouble for future users.
Also, could you, please, merge my answer to my newly created account? Or tell me, what I have to do to solve this problem?