The article implies that Mozilla is on our side, and wouldn't sell the user to marketing firms. But if you visit mozilla.org, collusion reveals that Mozilla (potentially) pass your information to webtrendslive.com.
The differences are that homebrew installs to /usr/local by default, doesn't keep track of package versions, and doesn't install its own versions of libraries that come with OS X (and therefore might be screwed up by an OS update). These are all Really Bad Ideas, which make homebrew technically inferior to macports, and less stable. However, they also make homebrew really simple, so it's much quicker and less cumbersome to use. Almost the definition of quick-and-dirty.
It's much better, but doesn't deal with the excess of whitespace in the contact list. That's what bothers me most at the moment -- my (not huge) contact list is 5 screens long.