One minor issue with using WebKit, however, is that it sets the default 'new window' page to this page, which thanks you for helping test WebKit, and lets you know there's a new nightly build available. This constant reminder helps insure that the WebKit team doesn't get bug reports against older nightly builds, but it gets annoying relatively quickly. (As a side hint, you can use NightShift to automatically download and install new nightly builds; highly recommended.)
If you'd like your Safari home page back while using WebKit, you'll need to use a simple Terminal command, which is documented on this page on the WebKit site (quit WebKit first):
defaults write org.webkit.nightly.WebKit StartPageDisabled -bool YES
Relaunch WebKit, and it will now respect your home page setting, as set in the General tab of WebKit's Preferences panel.

