JS-Kit's ECHO is a service that can be embedded in CMS as a replacement for commenting, and provides a real-time stream of diggs, tweets, comments. The interface, at first blush, looks a bit like an email composition form, with From, To, and Body Fields. Selecting the From drop down menu shows options for logging in your identity via JS-Kit or a third party social networking API. The To: field adds "This Page" by default, meaning you're adding a comment to this page. It also allows you to enter other destinations, e.g. Twitter, FaceBook, FriendFeed, to alert your contacts in those social networks of your comment.
Sign my guestbook and share a random, weird or inspirational message or whatever is on your mind.