I too, cringe at the addition of “2.0″ to words other than web (I even cringe at that one sometimes) but this really is a new, more social form of commenting. TweetBacks are an implementation of the concept of trackbacks for Twitter. By installing the JavaScript code on your blog template, you can display a list of all of the Tweets that have been posted that link to your content. A few days ago I created the first implementation of the idea of TweetBacks and published it to my blog. This is beneficial for a variety of reasons: Twitter tends to be a quicker and easier way for users to comment on and share content that they like; by allowing your users to join in the conversation via Twitter, you’re opening the door to a whole lot more feedback. TweetBacks also opens up the possibility of a Twitter user’s avatar and username to be displayed on a potentially popular post, creating more incentive for users to spread your content for you.…