If the United froum weren't down now, you could go into a thread concerning wine removed from checked luggage and read about all sorts of prohibited (and "prohibited") items.
It appears at some airports, screeners are confiscating liquor, claiming it's flammable. Of course, it's regularly served on board the plane, but try explaining that.
Allowing lighter fluid through the checkpoint (same screeners, BTW. TSA has just taken over management for right now) is pretty weak.