Definitely. But it also helps to cover the cost of production. But you don't need to upvote if you have something against it. I would still send you stickers because my last post can pay for it. It is give and take but I won't force anyone - I though do endorse it.
You can of course fill in the information from someone who has voted. But why would you do that. A vote does not cost you anything while I'am trying to do something beneficial for the community. You can of course do this but I don't see the point of doing it and why people would even start with that kind of behaviour. + You don't know who voted and who actually filled the form. So eventually there may be two people providing the same username but a different mail address.
But you two are making me think maybe I should rework this and post it tomorrow again without the need to connect the username to the address. I think this is a good idea. And orders just need to be fulfilled by a first come first served principle then I guess..