Hi,

I've been looking at some random flight searches using ExpertFlyer and I regularly come across airlines which state seats are unavailable yet when I look into it further there appears to be rows and rows of seats blocked out by the airline. Why do they do this. They dont appear to be occupied by passengers. Is it a tactic to see how full the flight may become then the airline may release seats slowly? Im baffled how this happens?

Also, apologies if I have posted in the wrong forum