Every SEO sees Wikipedia as the ultimate seo’d site. It show up everywhere and gives so much content to Google, that they are almost impossible to compete against. However, we also know the reputation they have for faulty information (preception is strong, although reality begs to differ, see Wikinomics).
Wikipedia is making a concerted effort to change that perception. As the web’s 6th most visited site, and credibility always taking jabs, they are releasing a new color coded system. The system will color sentences or edits and the more reliable the author and longer the text stays on the site (allowing vetting by others) the more the color will fade over time.
This video from CNN tech illustrates some of the jabs and shows what Wikipedia is doing about it. The color coded model is pretty cool, and wikipedia will have to do A LOT of PR to change the persception…this is another great step.