First off I'm very glad to have found this forum. So far everybody has been very friendly and helpful and you guys are helping to take years off of my newbie wine learning curve!
I have a small family of 3 (wife and an 11 year old daughter) and we eat out quite a bit due to our hectic schedules and subsequent lack of time to cook at home. We do from time to time eat at a "nice" place but for the average dinner it's going to be a $30 - $50 meal for the 3 of us (I mention that only to set the scene that we're not at Taco Bell, nor are we at a 5 star restaurant). My wife has a moderate allergy to alcohol and gets red and puffy with anything more than about a sip. My daughter is, well, 11, so obviously she's not drinking either. That leaves me in a constant debate pondering "should I get a glass of wine or stick with water"? I'm obviously not going to put down a whole bottle myself so I don't really have any other choice than to buy by the glass.
My question/comment is I have only had about 10% of these by-the-glass experiences be positive, am I just unlucky or is this hopeless to get a good by-the-glass sample at an average non-wine-centric restaurant? I'm certainly not an expert wine taster, and 99% of the time I have never previously had the wine that I am ordering, so I feel completely helpless to object to or even rate the taste. But I am convinced that something is wrong when *every* $30-$50 bottle that I have gotten is at least "ok" and yet many of the $9 - $11 glasses that I've had were almost undrinkable. In one recent case I did leave some at the table. As far as the taste, it's very strange. It's almost like I'm drinking an extremely cheap fortified wine like a Nightrain or Thunderbird. It's got a really harsh alcohol taste to it. Is that a sign of the wine having gone bad due to oxidation? The wines that I'm getting are always reds: Pinot Noirs, Cabs, Syrah's, etc. From my limited knowledge it seems that these won't keep very long after being opened. That leads me to the hypothesis that it's quite likely that the last person that had a glass from this same bottle could have gotten it weeks ago (or longer). Again, these aren't the types of restaurants where you get a lot of big wine drinkers, so I would be shocked if they actually had 3-4 customers ordering a glass of the same wine on the same night. Sometimes I almost wonder if I'm screwing myself by trying to order the "good" selections from their list. What I mean is, maybe if I got the cheapest red, that would be the freshest at least since more people would be consuming it. It's probably less likely that your average Joe Budweiser is willing to spend $10 on a glass of wine to go along with his $9 entree

Anyway, I'd love to hear some comments on a) whether or not it's usually a risky proposition to get red wine by the glass and b) how to actually pin down the taste of "spoiled" wine.
Thanks!
Jeff