i'm one of those with >50m. accumulated them a decade ago flipping MIKP in its first few years and keeping the "freebie" leftovers.
have left them collecting dust on the proverbial shelf since on the assumption that mark would desire to cash out his own preferred shares at a price above 0010 some point down the road.
still not holding my breath that it'll happen. but certainly won't mind if they are worth 6-figures again some day as they were briefly @ 002x before the sudden delisting to gray many years ago.