I wrote a post in our 'Central' blogsite back in February about Twitter.  How it has started to be recognised and talked about on the BBC and other channels.  At this point Twitter had 500,000 users.  On this morning's BBC Breakfast programme they announced increased membership to 4 million.  They have had the first Tweeter to reach 1 million posts - Ashton Kutcher. 

Twitter, back in February, was little known and little discussed, but now i...