Gox Daily USD Log Chart with Timeframes (Projected into 2014)

Repeated the pattern going forwards.

Will be interesting to see how accurate this proves.

This is my effort towards solving "the Mystery Chart" posted on BTC Talk:
bitcointalk.org/index.php?topic=279852.0

That thread also suggests a cyclical nature to Bitcoin. I have no idea what indicator(s) he's using though.