This could be the beginning of the end for Twitter. I've commented on this before (see the diagram, above). This post shows how easy it is to create a Twitter account and have it automatically reply to Twitter posts of any description. At the very least, it greatly increases Twitter volume. At worse, it renders useless any search and fills your screen with 'replies' to your tweets. In the comments you can even find a Twitter reply bot written without a single line of code using Yahoo Pipes, Twitter Feed and Pastbin.