No registration needed! You just fill out your e-mail and the one you want to send it to, type in an optional message, upload the folder (you don't even have to compress it anymore; only catch is that you can only send 2 GB per transfer) and away with it. Then the receiver gets a download link. All free and easy. I'll send you my pics like that!
Edit: Oh hang on, I don't think I have your e-mail address...
Haha that's an interesting topic indeed. Sometimes I wonder where they were going with names like Farfetch'd
It also took me ages to figure out Articuno, Zapdos and Moltres...