As long as folks keep crawling out from under rocks in the near future, there will be ammo shortage threads. They are shocked and sometimes quite irrate that somehow prices went up and supply went down. Some even feel that such changes are morally wrong and unAmerican, LOL. So they will post their discoveries so that the rest of us might know that 1) their supply situational awareness is horrible, and 2) that they don't know how to use the search function on the forum to see if the topic has been addressed or not.
Mostly they post, I feel, because they were just out and out caught flat footed and can't bring it upon themselves to blame themselves for being caught that way.