Hmm... well the crown hat does not make you invisible. It makes you inVINCIble, which means you cannot be hurt by mines, guns, or swords. And zak1, yes PR3 is coming out, no I don't know when, and no you don't get to keep your old accounts.
Pfft... On level 3, whenever I get above 50%, and make a ball, I lose a life. Making it in the wide open, near the bouncy balls, not touching the wall, kills me, for some strange reason.
PFFT. No. Cowboy hats are not for mods. Only people who win cowboy hats from F@H get them. Otherwise, they're just a random event in any race. The cowboy hat event does not "stay" in races, nor can you make it happen. And out not being able to download, try refreshing, opening a new browser, downloading (or re-downloading) new flash player, and for last resort, which nearly always works, restart your computer.
Crowns are only for mods ;). Level 30 does not grant you a crown. The people with crowns got them for F@H, or folding at home. You have to go look on jiggmin's website for the full info, I don't know much about it myself.