Using PageRank for Economic Gain

Thread Title:
Thoughts about the PR Economy
Thread Description:

These are some thoughts I've had recently after reading some posts about "Limited PR Theory" and the doubling of the Google index.

With the recent rise in importance of inbound links in the latest Google algorithms webmasters have begun enormous link building campaigns, adding link directories to their sites, gaining reciprocal and triangular links etc. I've been thinking more and more about how PR has become a virtual commodity which has a real monetary value. If you look at the money markets, you find that traders can make millions of dollars on minor fluctuations in prices between different currencies. If this theory is applied to the economy of PR then it is plain to see that due to the irregular updates to PR a company could exploit the same principle e.g.