I apologize if there is already a thread discussing this but I was unable to find it. If you have flaming on a weapon and get multiple attacks with that weapon does the flaming or other weapon enhancement apply to each attack?
Short answer: Yes
Somewhat longer answer: Almost all weapon effects apply to every attack made with that weapon.
The only exception I can think of: There is a weapon effect that can potentially catch the target on fire. It's not the regular "flaming" enhancement, it was something else (it might have been specific to the weapon).
Once the target is on fire, it can't be made MORE on fire, it's simply burning or not.
As SlimGuage said, Yes. Unless the ability says "once per round", it would apply to every attack.
Since he'll be earning 4x the XP, he should end up about 4 levels ahead of a normal group most of the time.
yes as others stated, but note it is a standard action to active the flaming property on said weapon. Most GM's ingore this but others do not.
True, but depending on how you interpret
Flaming: Upon command, a flaming weapon is sheathed in fire that deals an extra 1d6 points of fire damage on a successful hit. The fire does not harm the wielder. The effect remains until another command is given.
You never have to turn it off.