Raspberry Pi supercomputer

I was thinking about this and some team has already went ahead and implemented it.
http://phys.org/news/2012-09-raspberry-pi-supercomputer.html

Everything is so cool, on how the implementation was done; and even interesting after reading the article was, some of the comments on the page, seriously some people's comments is like, a little kid who flushes the toilet and sees with amazement; and later with adults conversation, raises his hand and says "me, me, me" "i know how the world works, it goes round and round, round and round". :-)