I guess that there's always been a second hand market though for stuff like books, furniture, records etc...so it's viewed as normal.
I am just musing here, but then, would it be viewed as normal if I went to an online bargain shop and purchased, say, Freeway Solitaire (or Windows XP for all it matters) for like £1.50? (or £9.99)
End users don't neceseraly know what Piracy is. if you can walk into a shop and buy a cheap copy of a game then the average Joe may also think of doing the same over the internet.
(and it shows by the pure amount of these websites that are appearing!)
Good topic Grey, it always brings up some interesting points. :-)