[yasth]

They have a travel wing. http://www.nationalgeographicexpeditions.com/ Including a partnership with a cruise line. They also have a fairly extensive travel publishing section http://shop.nationalgeographic.com/ngs/category/books/travel... . (They even have a very lightly branded travel insurance partnership http://www.travelinsure.com/custom/ngs/ )

Obviously discoverability, and advertising of these is less than ideal. A lot of it is actually verging on overextending to the brand, like "The Dog Lover's Guide to Travel" just doesn't seem a good brand expansion.

[zeveb]

Wow, I never knew, despite my folks & grandparents being members my entire life, and it's not even on their Wikipedia page, either. As you note, the discoverability doesn't seem very good.

I guess it boils down to the 'competently run' part: if one is going to run a profit-making enterprise, one needs to advertise!