It looks like we're in for more wild swings. Remember, this is Friday, and given that the market has been a roller coaster over the last few weeks, it's doubtful that traders will want to keep their positions over the weekend. This will only add to volatility, especially in the last half hour or so of trading. Keep your eyes on the following levels:
QQQ: 50 - 50.5
A strong move and a close through any of these levels will be a technical problem for the markets.
Also pay attention to volume.