Meetup.com is a site that lets people organize meet ups for anything they want. Personally, I am a member of several meetups, some involve drinking, some involve tech, and some are hobby specific. It is a great way to meet new people that share your interests. The service provides a way for you to find other people who like the same hobbies/activities that you do. For example, I have plenty of friends to hang out with, but not a single one of them are interested in scuba diving. Scuba diving is safest when you go with a friend.
Anyway, here is a list of drinking related meetups:
The Chicago Beer Meetup group
Chicago Beer Runners
A List of the Wine groups(70+)
What is lacking is a Chicago Beer Brewer's group! Lets go homebrewers, ante up the forty bucks or whatever and start a beer brewers meetup! Maybe the people at Brew & Grow can organize it, or the Beverly Brew Store. Angie's would love to help in any way possible! Who knows, maybe we'll start one!