A. I always multi-task when I play dominion. Still, it's annoying to have to wait because someone else was discourteous.
B. The last two times it's happened (in the past 24 hours, both with higher ranked players), it's been right after a big turn of mine that basically rendered the game unwinnable for the other person. So, I highly doubt it's internet connectivity issues in these instances, given the timing. But, of course, that's always a possibility.
C. My whole point is that if you're a high-ranked player, closing your browser out of frustration is not okay. Some folks don't know about the resign button, or don't care about courtesy or the community or whatever, but I would hope for better from higher ranked folks or people who play a lot. For the most part, this community is pretty great, so I recognize this is a minor quibble in the Grand Scheme of things (Grand Scheme - you can put two action cards back on your deck?) .
D. If it teaches more people about the Resign button, or causes more people to actually use it, then I would suggest that a thread is warranted. I purposefully didn't name any names of the people who did it because I didn't want this to be a "shaming" thread.