There`s a lot of reasons for the decline. Different reasons for different people. Facebook and Twitter are also two big reasons. Maybe the old posters might read this and chime in as to what their reasons might be.
Personally I posted more when I visited Tomahawk more. I haven`t been able to be in Tomahawk for a couple of years. I also was kind of turned off during the Scott Walkers "discussions".
It would be nice to hear from some of the old posters. Jeff , Brian, Fushia, Mullin17, and the great Mr. Kotta!