The volume of posts on WaPo is so fast and furious your comment will vanish like a leaf that falls into a stream. Also there are no notifications, so you likely will have no idea what the response is, if any. The Hill can be entertaining, but it is troll heaven, so if you don't like skewing them it can be depressing. It's like having an endless supply of straightmen to set up one liners. It is Disquis. The only other paper I have found that uses Civil Comments is the (snicker) Washington Examiner.