Touting is a UK term for buying up a limited resource (usually tickets) to sell on at a huge markup, and is a big problem because it hurts genuine fans, who miss out on getting tickets.
So 6th Edition has been on sale for under 3 days now, and there are already collectors editions on eBay for 3 or more times the book price (one buy it now @£210, one auction currently at £300). These people can't have even received the books yet.
What do people think of the practice? I'm personally disgusted at how unfair it is (and I didn't even want a book), imagine what it'd be like if you were for some reason unable to pre-order at midnight last week to find there are none left because of speculators.