Google Co-op has a pretty cool feature called Subscribed Links. Just like the name implies, a user must subscribe to a particular “link” before they can use it. Once you have chosen some of the items to use, you’ll start to see them popping up when performing certain Google searches.
I’m a pretty big fan of Wikipedia, and I visit there at least once a week. Sure, the information isn’t always 100% accurate, but I think they do their best at keeping it a semi-reliable encyclopedia, and the tone is usually informational.
Wikipedia is an absolute phenomenon when it comes to aggregating the knowledge of people around the world. There are over 75,000 active contributors working on more than 5,300,000 articles in more than 100 languages (source).
While using Google Maps, you’ve probably come across parts of the map that are either blurred, whited out, or pixelized. It’s no mistake, those areas are actually blurred on purpose (most of the time). They blur out spots on the maps that are considered to be sensitive like military bases, certain government buildings, nuclear power plants, etc.
Wikipedia is taking new steps to help prevent "indirect" vandalism. Software has been created and is in use on the main page. It's called "Cascading Protection" and it applies to local images and templates which are typical targets for vandalism. Andrew Garrett created this, and on his blog explains in a simplified way how it works:
