Last week I wrote about the benefits of open standards versus open source. I argued that open standards provide greater protection against vendor lock-in than open source alone. I was reminded of this conclusion when reading Peter-Paul Koch's analysis of WebKit implementations. Thanks to Palm's Dion Almaer for pointing out the analysis. Readers know WebKit as the open source Web browser engine used by several mobile and PC Web browsers, including Apple's Safari, Google's Chrome, Palm's WebOS, and the Android Web browser. In fact, Wikipedia lists 19 browsers based on the open source WebKit browser engine. As you read on, keep in mind there is no standard that vendors using WebKit must adhere to or claim certification against. A WebKit-based browser is, well, whatever the vendor wants it to be.