Just in case you didn't see it where I posted it in someone elses thread, I weighed an aluminum can (pull tab removed) then weighed a single pull tab, divided the weight of the pull tab into the weight of the can and found that 47 pull tabs equals one can in weight. I then put 47 pull tabs on my scale to verify and it was extremely close. Of course, if the cans have the tabs still attached, it takes 48 tabs to equal one can. Pull tabs don't take up as much space as a can, so are easier to store until enough weight is achieved to make it feasible to cash in the tabs. We pull enough pull tabs, we might as well cash them in! It all adds up. FYI, I also read that there are charity organizations who save pull tabs, so you can do it for a charity if you don't keep the loot for yourself! Just food for thought!