by Tom Foremski for SiliconValleyWatcher.com

For several months now I’ve been troubled by a nagging and unpleasant thought that there is a potentially large vulnerability in Google’s Adwords business model. I mentioned it for the first time the other day to a couple of friends and they urged me that I should publish it and not sit on it because it is better to get it out earlier than later.

If there is a problem with the business model then it can be dealt with while there are still mostly insiders holding the stock rather than Joe Public.

Okay, this is it:

A billionaire has arranged to give $100m to the first person that clicks on a special link that looks like a Google text ad.