I can still see them as well. I refresh it every day to see all the San Diego cruises. A few weeks back there were only 8 showing, but it's back up to 10 since the 7-night and a formerly sold out 4-night came back in stock. The downside of this curiosity is that I've gone from thinking a 2-night is too expensive for so short a cruise, to thinking it'd be nice to get in a quick 2-night in, just to be aboard.
I've also kept an eye (and notes) on price fluctuations and which room categories are sold out or close to sold out... I was thinking to myself "man, I've got to get a hobby..." but then I realized that this might actually be my hobby.