Java: Are strings really immutable?

No, but a Security Manager can at least spot their mutations.

http://directwebremoting.org/blog/joe/2005/05/26/1117108773674.html

git: A decision on merging.

A lot of people don't really understand why branch-merging is an ambiguous operation. Here is a good explanation:

http://bramcohen.livejournal.com/74462.html

jQuery: "return false"

Back from vacation, I found this fascinating explanation of a common mis-use of jQuery:

http://fuelyourcoding.com/jquery-events-stop-misusing-return-false/