How so? Reddits whole thing is having subreddits for relatively small communities formed of people that have a very specific interest. ie. what better platform is there for a pencil company to advertise than /r/calligraphy
aren't only hardcore pencil users are on /r/calligraphy and weak targets for persuasion via advertising.
I would rather target dabblers not hardcore users who already know which pencil is the best.