Crap, massively regret buying it at release.
ET and ETQW are some of my favorite games ever but I will think very carefully before ever giving Splash Damage another penny.
Actually this thread just reminded me I can free 5.8GB disk space by deleting the files out of /common.
Am I just being thick or does Steam really not have some sort of built in option for clearing out trial games that you haven't bought after the trial expires (i.e. no longer listed in games list)?
It was rushed out to meet deadlines and suffered.