EGO boosting aside, Nick Hac @ Shifted Pixels has done up a table of those in Australia of whom are most influential on the micro-blogging platform Twitter.

“As we couldn’t find an equivalent list for twitter – we put together a list of Australia’s most influential Twitterers. This is a draft version for now and im sure we will release a more accurate version soon.”

There are sites out there such as http://twitter.grader.com/ that have attempted to measure:

“The power of your Twitter profile” but not necessarily the amount of Influence you have.

Do you believe Nick has the right formula?
TwitterRank = (Following / 10) + (Followers) + (Updates/100)

Update:
After witting this article, I have begun to see blogs emerge such as the following: Measuring Influence vs. Popularity give it a read