I wonder why there was no volume and no price chang on Saturday, and so much of it today. Perhaps:
Over the years here is the general trend, if it matters:
1) price generally rose, with early-week being strong buy days. This was apparently because cash sent to Gox anytime during the week often became available in one's account Monday-Wednesday, and people bought as soon as their cash hit their account.
2) this got slowly pushed back until Monday became (and I believe statistically may still be) the strongest buy day. I have seen statistics posted here several times with either Sunday or Monday as highest buy days, Thursday biggest sell days.
3) so gradually people started buying late Sunday night in anticipation of Monday morning. They had been storing cash to front-run the coming buys.
4) this was fairly quickly pushed back further until many buys started happening @ noon (EST) Sunday
5) around the time between #3-4 the Chinese entered the market in larger numbers. Whether it is the cause or not is unknown but larger buys/sells began happening between 2-7AM EST (when the West was apparently sleeping).
6) With the rise in popularity of Bitcoin, skyrocketing price and amount/impact of news it seems harder to find a general pattern in the buys/sells but perhaps Sunday remains a sentimental day for action.