What’s that you say? You don’t have your automated trading strategies running in the cloud? WTF?
The SPX had its final-hurrah today up at 1060 just as my “cloud computing” indicator went purple (click to enlarge):

White bars indicate a neutral condition; yellow means caution, red means the rally is toast, and purple is a brick wall. If all four bars go red/purple, then the bulls are about to get tossed on the barbie.
The cloud indicator gives mean-reversion signals. So, I only use it during the middle of the trading day. The first and last hours of trading exhibit positive feedback more often than not, so trend-following strategies usually work better than mean-reversion strategies. However, the color of the cloud often gives a clue about the next morning. Here is how the octo-cloud looked at Friday’s close:

The market was poised to roll down from a stretched condition, and it was indeed weak first thing this morning.
Here it is at today’s close:

Light blue is a bullish signal; green is a buy signal, and navy blue means the market can’t really drop any more without some consolidation first. Even though the market was in a positive-feedback plunge into the close, notice that it flattened out after the cluster of navy blue bars at 15:20pm. It spent 25 minutes consolidating before beginning the next leg down.
If you went short at the close, chances are good that you are in for a bit of squeezing tomorrow morning. But this is a very short-term scalping indicator, and it only predicts the very near future.
I could tell you how this works, but then I’d have to kill you.