I'm not surprised to see Bangkok so high on those lists, as there's a ton of "like/click-farms" there. Same with Cairo, and a ton of others of those middle-eastern and south-east asian countries.
Watch both vids and you'll understand what I'm talking about:
http://www.youtube.com/watch?v=l9ZqXlHl65g
http://www.youtube.com/watch?v=oVfHeWTKjag