I see the world listed.
A follow-up suggestion: change it to Greyhawk: The City of Rookroost.
Simply because "everyone" is used to one of two things with NWN2; a) FR based, or, b) custom/homebrew setting.
Put the Greyhawk portion out there. You may attract people that otherwise wouldn't look at it.
Mentioning Rookroost might do it, obviously, but it's a little more obscure than actually including the setting in your title.