Guides, who earn their living taking folks to good fishing waters may loose a bit of business if your telling their future clients where to find the big 'uns for free.
In past discussions on other boards about this subject a couple points have come up. If the streams are small and heavy fishing pressure could do harm, why put it on the internet. If you want to share a great spot with people you know, do it by e-mail or PM, not on an open board or blog. By posting it in the open your telling anyone and everyone. The catch and kill guys read the blogs and boards as much as the catch and release guys, not to mention poachers.
Just food for thought.
REE
Happiness is wading boots that never have a chance to dry out.