There are certain indicators on the chart that tells us when Money is flowing in, when investors are happy about the stock(or unhappy), trends showing upward or downward movement.
Hard to tell you exactly what it means in the long run. Some people will annotate the chart, like Epic or Clay. You'll see people posting charts all day at different time intervals as certain stocks(especially penny stocks) can be deciphered better at say 30 minutes or 60 minutes.
The basic thing you are looking for is that the PPS rides along the bollinger bands.
If I have time I will annotate a chart giving the key indicators that help show where the stock "could" move to next.