> you get some _(generally speaking)_ 1-time tangible thing back.
I think this is the part where it is not a store. A store brings you something for you money. Kickstarter can cover the non "generally speaking" part where you can pledge money for nothing (you just want to push the project. i.e. $1 pledges are usually without any tangible return). I remember the Penny Arcade kickstater, where a lot of people pledge below the first tangible return, just because they liked the idea.
That's also what happens if you back an open source project, the tangible return might be highly subjective.
I think this is the part where it is not a store. A store brings you something for you money. Kickstarter can cover the non "generally speaking" part where you can pledge money for nothing (you just want to push the project. i.e. $1 pledges are usually without any tangible return). I remember the Penny Arcade kickstater, where a lot of people pledge below the first tangible return, just because they liked the idea.
That's also what happens if you back an open source project, the tangible return might be highly subjective.