I found an easy way to stop spammers who spam tons of accounts. Use Check User on any spam account flooded account, find out which ones were created by the same IP address, then block that IP address (anywhere from 1-4 years should be good). They may still create new accounts, but they will instantly be blocked after creation from doing anything. [[User:Arcane|Arcane]] ([[User talk:Arcane|talk]]) 02:31, 27 September 2013 (UTC)Arcane
:I wonder if 4 years are too long... (Why can't spammers change an IP, and the former one is left to a non-spammer, or it is a public IP?) --[[YiFei]] | <small>[[User talk:Zhuyifei1999|talk]]</small> 07:59, 27 September 2013 (UTC)
:: I just wanted to note that recently a lot of wikis seem to be affected by same type of spam attack (noticed on [[Bulbapedia]], [[Touhou Wiki]], even the [[Wikipedia]], though it's hard to notice because of the amount of edits). Most of those spammers, if not all, seem to come from IPs belonging to web hosting services, so no valid user should come from these.<br/>[[User:DennouNeko|DennouNeko]] ([[User talk:DennouNeko|talk]]) 17:13, 27 September 2013 (UTC)