There are a lot of hacking websites who are fooling you into this stuff. Yeah it is possible that Google may pick up some trashed passwords that never work. The passwords found are from some lame websites which don't have any levels of security applied to the data. There are many other simple ways to hack such sites.
Google caching - The pages that are picked up by Google for caching are simple pages. Google spider can not even find what's present inside dynamically placed content. The passwords are always stored in the database, which in no case can be crawled by Google spider. Google search engine always crawls through these cached pages to get the desired searched content. And every webmaster is aware how difficult it is to get a site crawled by Google or any other search engine. Even some innovative stuff used for the sites optimization can disrupt the crawling of your website. So there is no possibility that a crawler will enter the logs or databa
These clever website publishers use such stuff to get more and more traffic. If they were so good in hacking why do they publish such stuff? Suppose, if I find such a stuff, why would I publish this stuff? And then get listed in Google. After looking at my stuff they will get alert and configure the search engine accordingly.
So please stop wasting time on such destructive ideas. Use your mind to construct something useful. Don't let anybody use you for just earning good traffic.
by Bikramjit Singh author for sycamore.in and sarvpriya.com