The more I read this thread, the more I have the feeling that Hilton did not fully think out the pooling idea after it was most likely presented and approved by corporate as a way to "enhance" member benefits without too much cost associated with it. The following may be completely off base, but it seemed like there was an uptick of "there was a transfer of points from my account that I did not approve" posts close to the time of the pooling policy becoming effective. We are only seeing a very small sliver of what is going on but its possible there significant fraud instances which triggered the actions we are seeing now.