Forum:Suspicion of multible accounts

I've noticed and observed a user in Transformers Wiki, who seems to have been changed accounts for times. Every time I leave a user notice template or message on his talk page, he just quits and creates a new account to continue editing, completing ignoring the notice I gave before and editing with the wrong style. Besides the site policies (which does not allow multiple user accounts except for bots), though this user is not annoying yet, it just bugging me. Is there anyway (for Wikia Staff) to confirm if he is using multiple accounts via checking IP address or e-mail address like an admin in an ordinary forum site? -- TX55   TALK  03:34, April 27, 2010 (UTC)


 * The underlying IP has about 15 accounts created... -- 03:44, April 27, 2010 (UTC)


 * How can I find that? (It seems not be contain in the user creation log.) Thanks. :D -- TX55   TALK  11:31, April 27, 2010 (UTC)


 * I was going to email it to you, but it appears you have opted-out of email from other users... -- 11:58, April 27, 2010 (UTC)