The Wikipedia has quickly become a heavily relied upon source of information since its inception back in January 2001. Its user-editing system has been proven to work extremely well and allows it to continuously grow at rapid pace whilst maintaining itself as a reputable source.
In an effort to make it even more useful for people on the go, a mobile-friendly version of the Wiki has been officially launched which is trimmed down to suit the smaller screens of smartphones, iPhones, PDA's etc.
Details at Lifehacker.
