I guess others have posted this, but I wanted to put my 2 cents in. Just because your site PR drops does not mean you were penalized by google. In my time I have seen my site's PR go up and down. In some cases, google algo would adjust the value of a link (i.e. blog comment links) as it became a saturated practice by webmasters. As google adjusts its algo, all wembaster sites will be re-evaluated by the new formula, not just your site.
Take revenge?Instead try this.Build good informational websites and Google will surely love your website.
Sheeet, i'm so tired of google dumbness... where to start? Yellow pages ranking #1 for a major holidays/travel keyword? Last update was horrible and i am sure data was lost at Google. No algo can rank yellow pages #1 for a travel keyword! They've becoming dumb and dumber...
You haven't necessarily been penalised. Google often drops PR when a new algorithm is introduced. It happens across all sites, so it is relative. Your retaliation is not the correct way to solve the problem. Google aren't going to think "we are being punished". They won't even notice. You are just giving them more reason to drop your PR further, which will make you even more upset.
Take my example, i did nothing for my one blog but 1 month before google mark my blog as pr 3 and now its pr 0 . What he did we can't understand. Its just our luck
We all must know that it is not the pr which is important but it is how much traffic which you get, getting a page rank is completely automated, it happens when a site got pr 4 then may get dropped to pr 3. dont worry abt pr just try to post quality content on your site.
Great spirit man.. I can suggest you one mathod. In your robot.txt file disallow the googlebot to crawl your site. tell Google that there is no need to come to your site again .
Why don't you forget about pagerank and build a quality site. I have a couple of sites that earn good money with 0 PR