The organization has also been very aggressive in having their work translated into as many languages as possible for a long time. Which means that people in a lot of countries all around the world are acquainted with 'the people who knock on doors and talk about Jehovah.' I think they have had members in more than 200 countries and territories around the world. For a religion that has only had its name for less than 100 years, that's pretty impressive.
Too bad they've wasted that outreach on a message of "everyone around you is going to be killed by God very soon. Be one of the very few survivors!"