Luno was right, actually. You do have to go get the stuff. But I think the other two were correct a well. The supply/demand curves are evident. Just ask Siri.
Beyond that, platinum has the potential to build HHO generators, or the mystical "Car that runs on water" (depending on who you ask. I think HHO is possible, but there are too many scams). Same for Bitcoin. Depending on who you ask, it's either anarchists tying to buy guns on Tor or a Ponzi scheme or a future currency like USD or JPY or its some Savior or none of the above.
Frankly, I have yet to see an orphanage built in Russia thanks to Bitcoin. But, man, is Silk Road fun to browse.
I know I didn't help. 2 posts to go until I'm out of he newbie forums. Woo!