Like nate said its annoying when you go to the trouble of keeping up with someone, or holding something for someone for days, weeks or even longer and then they just disappear.
Sadly this happens with members both here and yotatech too. One in particular has done it to me twice. I gave him the benefit of the doubt even though he never had the balls to get back to me when he did it the first time a couple years ago, but he again did it to me recently and finished burning his bridge. If he ever wants something from me again I'm pretty sure I'll give him a fake address nowhere near me, let him waste his 3 hours going each way and stew on it. Maybe then he'll stop screwing around with board members
