Mean time between failure: you can think of this as the average lifetime of the product, as determined by our members. Whenever a member "Retires" an object because they wore it out, broke it or consumed it, we use that to calculate the MTBF.
Climbing ropes: 5-7 years, or after a number of big falls. Of if you see a wear spot. Most climbing gear manufacturers will have a recommendation on when to retire.
this isn't 'reviews' – this is notes from actual users. list of all notes, list of photos of actual used gear, warranty info, etc.