Visual Twittering: When Do You Tweet?

Journo and avid techno blogger Dave Lee put me onto Xefer's Twitter chart. It's insanely simple to use: just pop in your Twitter ID and it will read all your public tweets and then generate an image like the one above; you get to see when you tweeted and how many people replied to you. It's a fascinating to see when exactly I tweet (usually around lunch time, apparently).