NEW YORK (AP) — Facebook is proposing to end its practice of letting users vote on changes to its privacy policies, though it will continue to let users comment on proposed updates. The world's biggest social media company said in a blog post Wednesday that its voting mechanism, which is triggered only if enough people comment on proposed changes, has become a system that emphasizes quantity of responses over quality of discussion. Users tend to leave one or two-word comments objecting to changes instead of more in-depth responses.