Using the Atom Publishing Protocol, also known as AtomPub, you can get or post comments on a community event.
Creating community event comments
To post a comment on community event instance, send a comment Atom entry document to the web address specified in href attribute of the Event Comments element, of the event instance in the event instances feed.
Retrieving community event comments
Get a list of comments, related with the given community event instance.
Deleting a community event comment
To delete a community event comment, use the HTTP DELETE method.