Originally Posted by benberg2013

I get the feeling, that putting a reservation on the waiting list, that makes them often open more seats for that flight. Because, I assume, when putting on a waiting list, the "back office" will check how many seats have already been released on that flight, and re-consider opening more.

I've realised this from past experiences of mine and others, such as the previous post.

Just 2 days ago, I waitlisted 2 friends, and today I get a call that the upgrades are now available.