It provides an affordable way to travel, but you still must be aware that you will be working in order to earn your stay. Like a part-time job/vacation/adventure. I have WWOOFed at a bee farm in Florida as well as one that had an avocado orchard and grew micro greens and edible flowers for high-end restaurants in Miami. I have worked in Ohio where we spent a week helping them milk goats and can vegetables for the winter. And we are currently back at The Prairie Flower farm in Spencer, Iowa where we WWOOFed back in 2009. It's so beautiful here that we wanted to come back and stay for the whole month of July. We help harvest grasses, flowers, sedges, and rushes out in the prairie while still having plenty of free time to kayak in The Little Sioux River, practice yoga, go for walks, and explore nearby towns.
If you are looking for an inexpensive way to travel and don't mind working outdoors and getting your hands dirty, then maybe WWOOFing is for you! www.wwoofusa.org