I\'ve just upgraded to PhoneGap 1.6.1 and I can no longer get external URL\'s to open in Safari.
Prior to this version I had patched AppDelegate.m as follows:
In earlier version of cordova you can load a url in browser by adding target="_blank" to your links. But now you can use inApp browser feature.
var ref = window.open(encodeURI('your url'), '_system', 'location=no');
This opens the url in browser. Tested in Android and iPhone with cordova2.7.0