Hello!In order to prevent spam, some sort of verification procedure seems to be necessary.
Vim's website already supports "accounts"; would requiring one to log into a vim account before making tips or add-ons to tips help? A verification step for account privilege (apply for account -> mail to user with magic cookie -> user mails magic cookie back) should serve to ameliorate spam, I'd think, although it'd still be possible.
Regards, Chip Campbell