I am unable to post a question because "it does not meet our quality standards":
Where can I learn about said standards? I see no mention of them in the FAQ.
From the Community FAQ
Answer provided by Popular Demand.
Kyle Cronin's answer includes some good practical examples on how to improve your specific question.
My guess is that the system is rejecting your question because it's too short. Explain why you want to delete your contacts, if you have your contacts set to sync to your computer or an internet service, etc. Also of use is to tell us what you've already tried and what didn't work.