Why are some questions remove by ask moderators
Content is removed if it's found to be in violation of the Community Guidelines... http://www.ask.com/about/community/guidelineshttp://help.ask.com/ics/support/KBAnswer.asp?questionID=75 If you have specific questions about why content has been removed, or if you feel that something may have been removed in error, you can contact Customer Support for additional assistance.
Because they violate some rules
Because they do not follow the ask.com community guidelines.
Because those that are removed have violated the community guidelines.