All I can say is ... wow. I had no idea what would happen when I did create it.
All I knew is that I kept coming across all of these other blogs written by local Chicago runners. I started adding every one to Google Reader (R.I.P.) And everyone seemed so nice, and ran the same races, trails, etc, that I ran (or wanted to run). And I noticed we were all following each other and commenting on blogs. Some bloggers were getting together for run dates, or to do a race, or meet for lunch - it was all very one-off.
What if it was more organized? Honestly, when I created this site, I thought it would be just a web site. A central resource so that we could discover each other's blogs. Someone quickly suggested that we should get together (for drinks? at a race?) and so we did!
Hope to see you at the next meet-up!