The definition of a wine snob:
A wine enthusiast, particularly one who is pretentious, or self-important because of their "immense wine knowledge."
There is a fine line between Wine Snob and Wine Enthusiast. The dividing line is basically a matter of attitude and behavior.
Wine Enthusiast: simply shares their knowledge when asked for it or when it seems most appropriate.
Wine snob: tries to share knowledge regardless of whether it is sought or if it is appropriate. The goal isn't so much to help others but rather to show off and improve one's reputation and perceived imaged.
If you find yourself acting in the manor below, then you are a wine snob.
When shopping for wine, do you usually go to big brand name wines?
Do you refuse help of the wine manager at your local grocery store?
Do you rush to grab the wine list when out with friends at a restaurant
Do you volunteer information about how to taste, drink or enjoy wine, even if not asked?
Do you use descriptive words such as: Epic, Fat, Thin, terrior or immature when describing wine?
Do you hold your glass up in the air to examine the wine color?
Do you feel the cork after a wine is opened?
Do you ask about the vintage year of a wine when a friend or family member brings it over as a gift?
If this is how you want to be perceived by others, then you are doing a good job.
If it is not your intention, then be humbled and only offer information when asked.
Enjoy American Wines!
The Wine Afficionado