Though this weekend didn't have a Weekend Dip GREEN light, going short into this weekend would have given a couple percent or four gain (after subtracting exchange fees), if the timing were perfect:
- http://bitcoincharts.com/charts/mtgoxUSD#ig2-hourzczsg2012-09-21zeg2012-09-23ztgSzm1g10zm2g25
But when there's no green light, this doesn't always play out. There would have been nearly a 5% loss trying the weekend dip trade last week (heading into the Bitcoin 2012 conference weekend):
- http://bitcoincharts.com/charts/mtgoxUSD#ig2-hourzczsg2012-09-14zeg2012-09-16ztgSzm1g10zm2g25
So there isn't that great of a pattern except during downtrends -- which is the only time when the GREEN light will go on, and has resulted in a profit well more than 50% of the time when it does go green. The profits in following the strategy (only when GREEN is on) have more than offset the losses from weekends where it was on but gave an incorrect signal.
Maybe this weekend dip is just coincidence, who knows.