I used to run one years ago (about 10, actually) and it was pretty good. But, after a while, people did not participate, nor did they bring work to show. It became a free class. So, we stopped doing them.
A few years ago, someone started one up - and it lasted about 2 or 3 meetings.... then nothing.
The Milwaukee LightWave user group is pretty good though, and not too bad of a drive from Chicago. I went up to that last month.