I disagree. This is not a new topic and my views run contrary to the prevailing wisdom, which has been expressed by Silver. Here goes.
I do not believe that revealing the river on which you happen to land a fish is going to result in a commensurate increase in the number of anglers fishing that river. In fact, I suggest the two are completly unrelated. For example, just because someone posts that they landed a winter steelhead on the Kalama River on a pink jig under a float is not likely to result in hoards of anglers descending on the Kalama River armed with floats and jigs. I submit that it won't result in any more anglers on the Kalama than there would be on any winter day.
I'm not suggesting that anglers should reveal secret, out-of-the-way, fishing holes that few people know about or visit. I am suggesting that angler should not feel they are threatening their fishing future by stating they caught a steelhead last weekend on the Kalama or the Lewis, or the Cowlitz on a spinner or a jig or some eggs. These are not unknown rivers nor are those techniques a big secret.
I find it annoying when someone posts that they recently caught a species of fish, that they will not identify, on a river somewhere in SW Washington using some secret lure/bait. BFD!
BTW - I'm not suggesting that Silver's thread is one of those annoying posts. Okay, I'm off my soapbox now....