Maria is obviously smarter than she looks. She does indeed want to buy bitcoins and she knows how it works.
1) Announce on forums that you are going to buy masses of bitcoins.
2) Bitcoin users respond sceptical and are saying that you probably want to drive the price UP, meaning you most likely want to SELL, not BUY!
3) Bitcoin users panic at someone wanting to sell massive amounts of bitcoins and start selling off their bitcoins before YOU do.
4) Bitcoin price plummets to $0.01 (which is quite close to its actual worth by the way)
5) You buy a ton of bitcoins for $0.01 each
6) ...
7) PROFIT!
@MT: Say hi to bruce

Or... Maria is really, really smart, and wants to sell Bitcoins high. So she makes the original post, which is so childish no one will believe it. Bitcoin users are initially sceptical, but on reading the forum post by The Duke, realise this could well be a double psych, and start to BUY, not SELL.
Hope you have a really big, refrigerator, Maria, because it's turtles all the way down!