As one of the frequent posters in regards to Spirit, I feel that I've lumped some different topic items into the "lower fares at the airport thread" just because I felt that most people that wanted to see it would see it there.
I definitely scroll down and open the forum each time to see if there are any replies to the Spirit threads. Spirit has been making a huge push in regards to their FF program with their credit card and I'll bet there are more people than ever using it.
I was actually considering starting a thread today to talk about how NK has started blocking Fri/Sun reward redemptions but hesitated because I didn't want to clutter the "other" forum.
I feel like Spirit certainly wouldn't be the least frequented board open right now.