Ronald McDonald Houses have been collecting pop tabs for many years now, and actively promote the collection of them. However, they have stopped promoting the myth that they are made of “stronger aluminum”, and also accept donations of the entire can. The RMDH in Indianapolis has deals with most of the recycling centers in the area so that a donor can make their deposit any time they like, and the money from them will go straight to RMDH.
The reason RMDH focuses on pop tabs is because they are much smaller and are easier to handle - and thus it is easier for the RMDH to get a business to put a collection tin/cup in the office. The placement of a collection tin (and the subsequent free publicity as well as relationship built with the organization) is worth much more than the money generated by the pop tabs.