It might as well be. Everything on those pages, are a direct correlation to the information on Kano's web page, and this forum thread.
Ultimately, my (main) reluctance would be this: As it stands now, you could put a "donate to ...." wallet tag as you have currently in your .sig and people would think it would be going to Kano -- not thinking that it was actually going to you. If it's not official, it's not official.