I have only been actively posting for a short time here. I have been a Pentaxian for only a little over 3 years. I have lurked on all the other sites and posted two or three times on the Pentax Forums site.
I chose to stay here because I felt the people here were not quarrelsome, were helpful, and there was a kind of camaraderie among the posters that I did not see elsewhere that made me want to join in.
I am here to learn from others and share what limited knowledge I may have. I also echo Harriet's comments.