You acknowledge that Yahoo! may or may not pre-screen Content, but that Yahoo! and its designees shall have the right (but not the obligation) in their sole discretion to pre-screen, refuse, or remove any Content that is available via the Yahoo! Services. Without limiting the foregoing, Yahoo! and its designees shall have the right to remove any Content that violates the TOS or is otherwise objectionable. You agree that you must evaluate, and bear all risks associated with, the use of any Content, including any reliance on the accuracy, completeness, or usefulness of such Content. In this regard, you acknowledge that you may not rely on any Content created by Yahoo! or submitted to Yahoo!, including without limitation information in Yahoo! Message Boards and in all other parts of the Yahoo! Services.
You acknowledge, consent and agree that Yahoo! may access, preserve and disclose your account information and Content if required to do so by law or in a good faith belief that such access preservation or disclosure is reasonably necessary to: (i) comply with legal process; (ii) enforce the TOS; (iii) respond to claims that any Content violates the rights of third parties; (iv) respond to your requests for customer service; or (v) protect the rights, property or personal safety of Yahoo!, its users and the public.
Waht we are dealing with is content that does not violate the TOS (because with a deletion due to a violation of the TOS, Yahoo sends a message to the poster indicating that their message violates the TOS and may, even after one such notice cancel the account), but that Yahoo finds objectionable.
By not notifying a poster that their post does not violate the TOS or canceling the account, Yahoo is actually admitting that they are actively involved in censorship and thought shapaing for the benefit of "THOSE THAT DO NOT AGREE WITH THE CONTENT OF THE POSTS".
Yahoo does not support free speech as guarateed by the constitution and that is because they own the outlet and can thought shape and censor all they want with their media outlet.