There are numerous opportunities throughout The Lightweight Backpacker website for publishing your backpacking and hiking experiences. You can go direct to the appropriate recepticle and personally deposit your contribution as follows:
Buy & Sell Outdoor Gear Forum Here, as the name aptly implies, you can post ads for selling used backpacking gear and/or post inquiries in search of used outdoor gear.
Make Your Own Hiking Gear Submit your designs and instructions for making homemade outdoor gear, so others may benefit from your experiences. Here, you can also access the Make Your Own Outdoor Gear discussion forum.
Discussion Forums Here, you will have many opportunities to learn from others and to contribute your own experiences (and opinions). There are approximately thirteen different forum categories from which to choose.