My ratings are almost always up to date. I compare every new game that I play to all games that I have ever played. I am also a very harsh rater, so if I give a game a 4 or a 5 rating, odds are that it's in the Top 300 games on BGG. Games in the popular domain, such as Monopoly and Pictionary, are not the sort of games that I rate.
I'm an active member of Minneapolis Board Game Marathon on meetup.com. This group spends one weekend every month at either the Homewood Suites or Hampton Inn near the Mall of America. About 50-65 gamers show up to these marathons. The BGG member, binge gamer, is the organizer. I also play games on Saturdays at libraries and grocery stores through the Twin Cities Eurogamers on Meetup. Sounds weird, but grocery stores in my area have community rooms that can be used for gaming.
In addition to meetup, I have my regular Tuesday night group. Unfortunately, some of my favorite Eurogames have been a bust with my Tuesday night group, such as Le Havre, Cavum, and Princes of the Renaissance. I'm also an infrequent guest of WAGN, which is a gaming group that favors Ameritrash and wargames. This group meets every Thursday for shorter games and once or twice a month they play an "epic" game on a Saturday or Sunday. I really love the Euro/wargame hybrids. However, it takes a lot more time and energy to round up players for a particular game.