Brian, I'm sure Casey and David are right in concluding that surgery is discussed here more often because it remains the most frequent treatment choice. But, IMHO, there is another reason and that is because surgery yields more side effects...and these are especially onerous in the first couple of years. Many of the seed/radiation guys come and go as their treatment almost becomes an afterthought. I personally stick around to both further my education on the subject matter and to provide a counter point for men who may want to select treatment other than surgery.
So, just look at the topics...ED, incontinence, short d**K, depression, penile implants, etc. Most of us seed/radiation guys don't have to deal with that stuff hence no need to spend time on a forum worrying about it.
Just my take,
Tudpock (Jim)