Facebook now lets you post photo comments from the Web site, but not through the mobile apps. Here's how you can still post a photo comment from your smartphone.

Users can customize their Facebook experience with updates to post comments and news feed filters.

Thousands of people come to The Washington Post’s comments section every day to share their thoughts and read others’ perspectives on our stories. We’ve heard from many of you about ...

We've introduced exciting changes to Washington Post comments! You can now view your past comments and ignore comments from particular readers.

How to Comment on a Reblogged Post on Tumblr. Account holders on Tumblr use the Reblog feature to share links, text, quotes, audio, photo and video posts from other Tumblr blogs. With this feature ...