I use bit.ly for shorting links and tracking stats just like the article mentions. It used to work great for that. Paste a link, :boom: it's shortened, and I can press a button to copy. The only thing that would make it better is if I didn't have to click copy afterwards.
Now, I have to click "add bitmark" (and figure out what the heck that is), paste the link, add an optional note, click save, then click copy before the flash message goes away. If it does go away, I have to click info, then copy the link. This is extremely annoying; the first time especially so.
Bit.ly wants to be the new delicious. Fine. Whatever. Just keep the one-step process for making short URLs. That's why I'm using it in the first place.