This has been a heated disagreement topic on here lately. I am going to re-post my opinion here on sharing specific info; for whatever it's worth:

My 2 cents: I think it's a poor idea to post to big audiences about any relatively low pressured small rivers or less known and fished sections of medium rivers. These areas are few and far between and they are precious. They should be kept that way. ... I also think that fishers who broadcast they catch hundreds of fish per year, mop up behind other guys that aren't catching fish, and challenge guys to 'fishing duels' won't get the kind of respect they seem to think they will. ... For well known medium and large rivers that have good brat runs I don't have a problem with reports about how the water conditions and fishing are in general. Skip the specific holes. I don't think that most reports are for bragging; only some of them. Most are to be helpful by sharing benign info. To help people that don't get to fish very often it's fine to let them know which of the popular rivers are worth fishing or not at given times. Within those simple guidelines you will likely see only minimal overall affect on your fishing world. This is the "info age" and you can't control it with put downs. Make some feasable guideline suggestions, then just deal with the reality. - RT