I'm a well known contributor that dumps Japanese Wonder Cards into Pokésav compatible PCD/PGT and PGF files for replicating usage. I mainly deal with legitimate (Legal) Wonder Card files acquired through actual Events and collect my own Wonder Cards.
I usually submit Wonder Cards to sites for the Japanese Region since 2009. I've also helped out with WC and Distro images with the sites all the way until 2013.
On Bulbapedia, I usually help out with Distribution Text for Japanese Events when I find them on Japanese pages for the Fifth Generation of Pokémon games.