Day trading BTC is retarded because the exchanges are all incredibly basic and the information and tools slow, lagged and generally terrible. So it's mostly blind luck . That being said I have made back alot of coin the last few days, but i've also lost lots of coin day trading.
Actually this feels more like the golden age of daytrading, only with oddly high per-trade fees and access to the order books and half-decent charting tools, and without the big money manipulator interests (although you can almost feel their hot breath on your neck). I give it a thumbs up, if you know what your doing you can really make out here. I'd like to see trading fees move to maker-taker which is more sensible than charging both sides, mtgox makes far too much for doing far too little. That's pretty much my only complaint.