That was a good article. I am just learning how to work the system to my advantage. The one point I thought was really useful was:
"Try and Try Again. As above, award flyers often cancel reservations, and these awards are put back into the system for you to scoop up. Get a "not available" verdict? Try again tomorrow, and again in a few days."
I was looking for christmas flights to Boston and they were about $1000, so I was thinking FF miles?? Well the only available seats were first class, which would have wiped out my balance. Whilst I was thinking about it for a week (and subsequently decided to go for it, thinking first class would be fun ONCE!), they had evidently released more seats. I was able to book an economy award ticket for half the miles of first class. I guess my chance at first class passed me by...luckily.