Should Yahoo change the way it creates new accounts?

The only feasible answer that I can think of is that Yahoo should prevent the opening of another account from the same IP address that a blocked account was opened from (but this should NOT apply to an account that was closed by the user).

Even this would not stop many little trolls and spammers!

I first read your question a couple hours ago but couldn't answer it because I had never formed any opinion on it and had no view on it whatever to share. Since then I have finally formulated a view. Making it impossible or more difficult to whip out a new account will limit the number of thumbs downs trolls, report abuse trolls, and other community guidelines violations. AT THE SAME TIME good honest people that had too much to drink ONE NIGHT could have an entire year of contributions wiped out in an instant and they may not wish to start over at 100 points the way a troll could care less about starting over at 100. Hopefully this is what you were asking because I did not fully understand the question nor the previous answer because I'm SLOOOWWW....

But the direct though somewhat both concise and laconic, and perhaps even salient, answer is: yes, yahoo should change the way it creates new accounts. The question then becomes: what needs to be changed?

Should Radio Shack continue to ask customers for their phone number, when all they are buying are batteries?