Communcation Technology: Comments Widget

Today I came across this service, 'Disqus'. Disqus allows you to embed a commenting service onto your website; it's currently being used on the Transparency BETA for 10 Downing Street. Seems like it may be really helpful for me in trying to create more interactive websites though. All the syntax is relatively conventional; anyone used to using Facebook or Twitter would have no difficulty in using it.

http://disqus.com/