Because of the non threaded nature of Facebook and the fact that you have no easy way of telling if the original poster read the message. As well as the fact that a lot (not all) of Facebook users are very novice computer users or 3D Makers. I find it difficult to help out by answering questions. At least here, people can respond back to the same thread and you pretty much know they read what was posted before. I have tried over the past couple of weeks to answer a few questions, but I fear it is just an exercise in futility and my life is too short to be filled with any more frustrations or regrets. Am I the only person that feels this way? Of course I am ranting, ugh.