I like the way Yehuda first lays out his motivations and goals as an open source developer and then evaluates the MIT/BSD vs. GPL licenses based on those goals. That’s how you pick a license. No one can tell you why you write a given piece of free / open source software, so no one can really tell you how it should be licensed.

Like Yehuda, I tend to lean heavily toward MIT/BSD style licenses these days but I can imagine situations where the copyleft stipulations included in the GPL would be extremely important to me.