Here's what I learned about their letterboxing activities:

• 89% percent of the participants refer to letterboxing as a hobby or an activity/pastime.

• Some described it as a sport (1.1%) or a game (3.1%), with 5.6% describing it with these words:
  
• an addiction
  
• a combination of art, hiking, and scavenger hunting,
  
• hiking in the woods or biking on rails-to-trails with a twist,
  
• a hobby/pastime/activity/game/exercise all in one,
• a lifestyle,
  
• a life changing experience,
  
• my portal to nature’s wonders, and
  
• performance art.
  
• Of the 355 study participants, 29.6% have been letterboxing for less than 1 year with those participating for 1-2 years accounted for 65.1%.
  
• 9% of the letterboxers reported that they had found less than 10 letterboxes, while 20% reported they had 200 or more. Nearly 6% reported finding 500 to 1000, and 1 letterboxer reported having collected 6000+ stamps in his or her personal journal.
  
• 42% of those who have been participating for 1-2 years had found more than 100 letterboxes each.
  

Stay tuned for more details about planting, adopting, hitchhikers, and letterbox gatherings.