Another thing that came to my mind while reading the
BBC article linked to by the Yahoo article in TFS (yeah, I actually read all that stuff, I must be new here) is the fact that while many people with non-english native language may be comfortable reading articles in english (maybe sometimes using Google translator or some other stuff) but not necessarily be able to easily answer the question, even if they knew the brand.
The "Ad-CAPTCHA" in question (
image) asks to describe the brand "dyson". A valid answer would probably be "vacuum cleaner". Would the system accept "Staubsauger" (German for vacuum cleaner, actual meaning: "dust sucker") as well?