Keep your eye on how the market trades today and especially keep an eye on the close. Traders are more inclined to keep positions over the weekend if they don't think there will be bad news that will lead to a big drop on Monday. We've had a big spike in volatility this week, so traders' will vote their confidence/lack-of-confidence of possible weekend news with their over-the-weekend positions.
Also, watch to see if we have any solid trends develop or whether the market meanders with no direction for most/part of the day. These intra-day trends will help to determine if there is any prevailing mood among traders about the market.