I'm confident that this has been mentioned previouly, but I wasn't able to turn it up. I believe that a glossary of frequently used frequent flyer and FlyerTalk (say that 3 times real fast!) terms would be useful. I see a lot of new users asking for explanations of terms (not just airport codes and acronymns), and I know from experience that it takes a while to get the lingo down. Seems like a link at the top of the page would do the trick. And there would be no shortage of FTers who would volunteer to develop the definitions.