Ok, enough about charts on OTC's. Look, it's real simple. OTC's are the most manipulated stocks out there, hence their historical charts are just as easily manipulated.
Now, having said that, INTRADAY charts can be very effective in determining and entry and exit point.
On OTC's, I use historical charts to see if the stock's being manipulated or not. One that's being "worked" usually runs about 3 days and then it's in the toilet.