SO.ja allows "Post as a guest" and in some cases using the same email address, but it's recorded as a different account.
We need to repeatedly comment on how to merge accounts. Is this behavior correct?
I understand how cookies work, but why ask guest users to enter their email address? If you don't use it to identify users, don't need an email address?
In some cases, accidentally created a second (or third!) account in less than 30 minutes.