I discovered bitcoin this summer and was intrigued. For those who don't know what it is, its essentially a peer to peer Internet currency thats decentralized and completely untraceable.
I have been running the bitcoin client for a few months now and have managed to generate some coins from that. I also bought a bunch of bitcoins when I first started using it. I think they were trading at around 6 cents USD per bitcoin. I just checked now and the price has spiked to around 25 or 30 cents.
You can check out bitcoin trading data at MT GOX, a bitcoin exchange. [Edit: I hope no one used Mt. Gox and lost their Bitcoins.]
If things keep going, I might have to incorporate this into my portfolio valuation. ;)