if "you" say that it is possible only because the defense's mention Mark Karpeles as being "the pirate" then you have to say that the defense's mention of
Mark Karpeles's ownership of the site Bitcointalk.org too In the beginning he has hosted bitcointalk.org ( and this is why he has got the "VIP" rank) , read this post :
MagicalTux got "free" VIP status for hosting the forum for a long time, too. I think that him plus Hal are the only free donator statuses I gave out. You'd have to do something pretty extraordinary to convince me to give out another free one.
I don't see any point in donating 5 BTC now and then 5 BTC later. You won't get Donator status until you've donated a total of at least 10 BTC. It'd be better for you to earn interest on the 5 BTC somewhere until you're ready to pay 10 BTC. The forum isn't in need of money.
I am not 100% sure why (it may have been because he was hosting the forum), but the FBI at one point thought that MK had owned bitcointalk.
As much as I would love to see MK go to jail, I somewhat doubt that he will because of any involvement in silk road