How do i build a good treefort?

Question:

Answers:
Safety to children is the only major concern.Treehouses should be designed to rest upon major branches and to nestle around the trunk. This will minimize the need for any injurious attachments. Remember trees bend and twist in the wind, so simply jamming or wedging boards between branches or into crotches will lead to failure. Assure a treehouse stays snug against a branch by using rope. All rope attachment hardware should be on the treehouse, not screwed into the tree. Attaching a treehouse to tree branches with rope can prevent large wind storms from blowing a treehouse away, or prevent ambitious and ingenious children from changing design concepts and injuring themselves.
http://www.farmersmarketonline.com/howto...

The link below has specific information, materials list, and a kit, if you want to remove the guesswork.
http://www.diynetwork.com/diy/hi_outdoor...