Bridgy is a service that pull comments, likes, and reshares on social networks back to your web site. You can also use it to post to social networks - or comment, like, reshare, or even RSVP - from your own web site.
Enable conversation across the web. When you link to a website you can send it a Webmention to notify it and then that website
may display your post as a comment, like, or other response, and presto, you’re having a conversation from one site to another!