The Davis Square Community

It seems to me that a noticeable amount of posts in this community end up being about newbie questions as people find their way to our wonderful square.  And, as August winds down I'm sure there will be even more.  I love the fact that this is a great resource for those questions, however, after the first dozen times a question is asked about where to get a hair cut I start thinking maybe we should get a wiki going for these more common questions.
So I pose the following questions:

1) Do we have a wiki already?
2) Should we start making use of our wikipedia entry? http://en.wikipedia.org/wiki/Davis_Square
3) Or we could use a wikispaces wiki I just set up. http://davissquare.wikispaces.com/
4) Maybe we should just make use of and point people towards Yelp.  http://www.yelp.com
5) Is there another option/suggestion I'm missing?

Let the discussion begin!

EDIT: Additional suggestions
1) Tagging Entries

EDIT: Conclusion
Looks like tagging is the preferred method.  The wiki however does exist so if people want to work with it, be my guest.