It seems a number of folks have discussed similar issues before,
<i>http://ez.no/developer/forum/general/blank_accounts
http://ez.no/developer/forum/install_configuration/user_with_unvalidated_account
http://issues.ez.no/IssueView.php?Id=6311&activeItem=1 http://issues.ez.no/IssueView.php?Id=6246&activeItem=2</i>
I checked most of these links b4 i post this thread. they are not quite matching my scenario.
they talking abt the accounts user created have blank information.
Mine is these visitors not actually creating the user account. they leave the registration page without discard the draft. then thousands of draft kept in the database and "my draft".
are there some settings i could apply to stop this unlimited draft? or i need run some cronjob to delete these draft periodically.