TSI is a "double smoothed" indicator. It is used just like RSI. Overbought and oversold levels differ. They are marked by the indicator. BTCe shows only 3 oversold conditions so far, the last one being just days ago.
Indicator allows choosing either MFI or RSI and draws a BB over it to identify oversold / overbought conditions. Oversold/Overbought breaches are highlighted using different colors for easy identification. Has helped me a lot during sudden pumps to identify the tops, hope you find a use for this.
Small modification to stock UO code to highlight lows / highs. This helps to see the trend easily. The length to check for high/low is configurable (lengthSlope), I am yet to find the optimal setting but 30 looks nice so far.