I was diagnosed with Ulcerative Colitis 4 years ago, and over that time I have basically stumbled across other people who have either colitis or crohns (they're similar diseases), so it's nice to see that Chronology is for sufferer's of either disease.
What I was going to say was - it's difficult to find other sufferers because people tend to shy away from talking about it - it's only when you mention the disease first that others seem to be willing to admit that they also have it. Comments I've received in the past have been "I can't believe you're so open about it" etc
I'll talk to anyone about it, because you never know when someone elses point of view will give you some new piece of information you didn't have (ala Alan Kay's "point of view is worth 80 iq points" quote)