Watch the price action and if there is volume behind the move and bids on fall or asks on rise are being hit with size then the odds are then the reversal will usually be stronger.
I don't know whether today's higher oil prices will be a burden to this holiday shortened session, but profit-taking in oil ahead of the holiday weekend might set-in, and that would be a positive.
right now, the ECB did nothing to surprise the markets,
what the markets already know generally does not hurt them.
two remaining wild-cards for the day: Trichet's 8:30am ET comments and the non-farm payrolls.
we've already seen a lot of selling this week, profit-taking would mean shorts covering ahead of the holiday.