Does Yahoo delete derogatory questions?

If the Q is insulting or is a non Q and more of a rant, then yes. Q's have to follow Terms of Service.

Not all the time but I dont think a question should be posted if they dont want us to attempt to answer it. It takes alot of time to do this for them to show its been deleted after we Submit. Makes one feel used such as writing a hour and half letter using Yahoo Mail and it decides to close losing it or Spammes can get to us but we cant reply back to them with out doing JRM95n etc If the incoming mail is not a legit address it should not be accepted snce we cant bounce it back using Yahoo Mail. Some of my answers have been lost and maybe this one will if they dont like it.

Yes since such questions are in violation of the User Agreement.

There is also a STRONG Lib bias here on Yahoo.

Not often enough. The onomatopoeic coprophile is still managing to post under a variety of near identical avatars.

Yahoo filters questions based on keywords.

Deletion is done by 2 or more uptight users.

The kind who call the cops over a noise complaint.

You can't say anything negative about Obammy. Although they can rip bush and others relentlessly and nothing is said.

they delete questions that point out the obvious flaws in the lefts logic, yes.

Only if someone complains.

Wanna guess which group complains the most?

only if they don't like you then they will delete anything you write,