sstasiak
Super Pupa
Increasingly crowded rivers are probably a result of an increasingly crowded region. Look at the population growth in the Tri-State area since 1983, and all of the other things that have changed besides trout streams.
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Last thing and I'll shut up. Sharing a fishing hole with another guy or two is fine if they're friendly and have good etiquette, even better if they share a pattern or a beer with you. It's when they're sullen a-holes that it ruins the fishing. This site seems to serve as a forum for the first kind of guy rather than the second, providing a place to share tips, photos, etc. What's wrong with that? Gives us a leg up on the jerks...
The first part is well put, now add increased "advertisement" of these rivers to the increased population, and you get overcrowding. Population growth on its own isn't the only problem.
As for one guy helping another out...I can only speak for myself, but I don't have an issue with that. Hell, a lot of what I learned was from guys I met here. I think the lack of discretion when posting a gallery of fish pics about a trip to a certain river is the main concern of some of the guys here.