The Cuyahoga Valley Photo Society is a nice photo club, and there are quite a few 10D users. They have monthly meetings, quarterly photo walks, and workshops twice a year. Check out their web site for more info. http://www.cvps.org/
I also recently found another photo club in the Summit County Metro Parks, attended one of their meetings, and joined them on one of there photo walks. They also have a number of 10D users. http://www.metroparksphotoclub.org/4436.html
Both groups have a lot of nice, helpful members. If anyone knows of other good groups, let us know.
I'm in the Massillon area, but am originally from suburban Cleveland. It would be great to get a group together.
There is a nice photo club based out of the Wilderness Center in Wilmot, Ohio. I went on an outing with this this spring, and had a great time (though I was the ONLY one shooting digital!). They also have monthly meetings. 'll do more as time allows.