Pull quotes are relevant/interesting quotes pulled out of a longer article and displayed prominently in the article itself, usually in bolder, larger type. They're intended partly to catch the interest of readers who were otherwise just skimming, and to break up page monotony.

HA! (a break of several minutes' worth of laughter ensues) You have absolutely NO idea how much your comment made me laugh. I've been waiting just a little over three years for someone to finally say, "Good grief, Amy, you really do pull those titles out of your ass." I quickly got bored with literal titles, so I had great fun just pulling random phrases I liked from the entries themselves, whether or not they actually fit. No one ever said anything. Ok. Maybe it's not as funny to other people, but man, I've been waiting for three years for someone to say that!

But, to answer the question asked (how annoyingly direct of me) I'd probably just start adding quotes to the current entries, and then go back and hit a few highlights. Longest entries, entries I found interesting enough to revisit, the stuff on the so-called "best-of" page, etc. Note to self. Revisit that whole "best-of" page thing. It's probably time to update the lists.