I asked a question on one of the SE sites using the Post as a guest feature. I was really happy that SE allowed me to ask the question without a complicated sign-up process.
After posting the question, the SE system kindly sent me an email with the following subject: Thanks for your post on ... Stack Exchange
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Because people were asking for clarification in the comment section of my question, I changed my mind and decided to sign up for a real account, using the link provided in the email, so that I could answer people's questions. Or so I thought.
I was really perplexed when I realized that I had just created a new account, that was different from my guest account. I chose the same user name (which has no effect, it seems), but the only way I found to respond to people's questions was to edit the question of the guest account and hope that someone would approve my edit. I couldn't post any comments due to lack of reputation.
The email address I used for opening the new account through clicking the link is obviously the same I used for the guest post. Why aren't the accounts linked automatically? Am I overlooking something important here?
A similar question was asked here: How can I merge a guest post with a new account? However, I'm wondering why this doesn't happen automatically if I confirm my email address.