how do they work? if you beat the monster that's away from its lair, you get some loot. does the lair then disappear? (think i saw that happened. not entirely sure though. it was a forest drake?)
if lair stays, does it spawn extra copies of "bosses" later? if you loot lair (and get some loot) when boss is away, do you get extra copy of same loot when you beat the boss too?
(having problems searching in these forums.. not sure why.. noscript/cookies probably)