"Webkit, an open-source web browser layout engine that originated with Apple's Safari browser."
That line seems to imply that Apple invented webkit, which they did not. Webkit began as part of the KDE desktop environment for Linux. I'm not sure how much(if at all) Apple contributes back to the webkit project, but anybody here who doesn't think Apple steals code from Linux and marginally reworks it into being "original" code is either a fanboy or just plain stupid. Not only are they stingy with their intellectual property, but they have no respect for other people's intellectual property, since the license for Linux makes it clear that it can't be made closed-source.
See:
http://webkit.org/