That would work after a huge promotion or if the celeb was paid to make big deal of the tip. Most would have no idea what the tip, no idea how to deal with it and no interest in a few extra dollars.
why not simply tip celebrities on twitter with the pandacoin tipbot? cheaper and their fans would see it aswell.

Nice idea

Minairia3, you forget that celebrities are people too.
And you can drop the business proposition.
If you were truly providing a legitimate business proposition, you would have contacted the developers directly instead of attempting to pressure the community with your poor scare tactics.