Posts on perpetual motion machines show up fairly regularly both in the Physics forums and in the Engineering forums. Generally, the OP has little or no knowledge of physics or engineering, and sometimes the posts turn into flame wars. I'd like to propose a new forum be opened that all these perpetual motion machine posts can be put into. Something along the lines of a sub forum to the Skepticism and Debunking forum. Maybe call it "Debunking Perpetual Motion Machines". The problem with keeping these posts in Engineering or Physics is similar to the problem of allowing posts regarding religion in the Philosophy forum, it detracts from the legitimacy of the board. If the board honestly wants to entertain these posts in the physics or engineering forum, it seems to indicate to the OP and also to others reading them, that perpetual motion machines are to be taken seriously - as if all that needs to be done is to be clever enough to overcome the physical problems of creating energy, and the problem will be solved. By opening a new forum such as "Debunking PMM's" and placing all these posts in this forum, it indicates to the OP there is no way to create such a machine and it indicates to everyone that this board doesn't take such things seriously. Such posts immediately loose legitimacy! Sure, they're fun sometimes to try and figure out where the problem is, but it will always come down to being nothing more than the riddle, "why won't this work?" A second reason for adding this separate sub-forum would be to expose fraudulent web sites. I'm sure we've all seen the web sites that ask for donations to develop technology or flat out try and sell plans or products that allegedly create energy. Often they won't disclose that they're really perpetual motion machines. Instead they'll try and convince the unsuspecting slob that they've found some new and unique way to use gravity or the sun's energy to create free energy. I think we'd all have a good laugh at exposing these sites, and we might actually do the public a small favor to boot. By exposing them, at least there's a chance that the 'unsuspecting slob' might have Googled the product, idea or web site before parting with their hard earned cash. If they do, they might also pick up on the "Debunking" board and find that fraudulent web site listed, along with some discussion on why that site is fraudulent.