Tasting etiquette at large, crowded walk-around tastings

I attend many so-called "walk-around" tastings and there are a few things that really annoy me about this type of event. This is one of my pet peeves: People who get a sample of wine to taste, and then just stand there tasting the wine and chatting with the person pouring the wines. If we all did that, nobody would have a chance to taste more than a mere fraction of the wines. When you are at a tasting where there are dozens or hundreds of wines being poured, don't just stand there; get out of the way so somebody else can taste some wines. You can do your learning and evaluation of the wine away from the table.

Here's how to do it properly: walk up to the table, and when it's "your turn," get the sample of wine, find out what it is, and ask one or two very quick questions. Then say thank you and step back away from the table so somebody else can get a taste. Depending on how quickly you are tasting, you should either stand clear of any tasting tables, or stand close but not so close that somebody else can't get in the queue. When you are ready to taste again, just repeat this process.

How to deal with the table monopolizers: stand behind them, stick out your tasting glass, and shout to be heard. The ones being rude will probably look back at you as if you are the rude one. Just smile and say, "Excuse me, I'm just trying to get a sample." When you get your sample, say "Thanks" and step away. Do this often enough, and they'll get the hint. If they don't, just elbow your way in and ignore them.

And you guys who are doing the pouring of the samples, you are just as guilty. What's the proper way? Look up and acknowledge anybody who is standing on the "second line" of tasters. Pour a taste over the heads or between the shoulders of people rude enough not to step back when they have received a taste. A good "pourer" will develop a little patter on each wine, and will be able to serve many people standing around the table, not just the ones right in front.

That's my biggest complaint about this type of event. What's yours?