User:Ans/spam

• googlegroups
  • many spam come from gmail account
  • creating gmail account require captcha
  • registering googlegroups with non-gmail account require captcha
  • subscribe via email using non-gmail account not require captcha
  • subscribing to any groups via google account, should also require captcha, to prevent subscribing to many groups via bot
  • uploading image or any content to the groups, should also require captcha