I'm not sure, I used to create threads along time ago. Now I just don't create threads, because I have no reason. I probably made around 20, but that's an approximation.
Or the fact that most topics has been used over the years. Any vet will find it tiresome to answer the same topics over and over, and newbies might not be as creative as they could be. I have made threads. I don't care for the amount very much, since it has little to do with anything. Besides, mine always end in some kind of "too long, didn't read" and get very few responses, so I doubt I should be proud of any of them.