There are 500 million tweets sent every day, give or take. So how do you make yours stand out on Twitter?

[youtube http://www.youtube.com/watch?v=QTPOnZfI3tk&w=620&h=315] By some measure, there are 500 million tweets sent everyday, world-wide. For the purposes of an exercise, consider this: if you were to say that each tweet represented one inch of space (because why not), the 500 million inches therein would stretch 1/4 of the way around the circumference …