Thank goodness I don't have to choose just one--I have lots of time (so far) and regularly run through six or seven sub-forums at lleast twice a day. But if I really could only frequent one it would be the Lounge. I get my silliness fix, music clips, history, pet pictures, previews of Paladin's articles, and people's requests for prayers and encouragement.
Farcebook can't hold a tiny, distant, flickering birthday-cake candle to the Lounge.