are you referring to the Relative Strength Index? The inidicator that measures the 2 week momentum of a stock? Are you confusing it with Relative Strength, which measures the stock price compared to the market average?
Two very different things, Clown. The RSI will push on and hold 100 (the max band). An RSI over 80 is not a sell sign. It is a sign that reads "GET IN OR GET OUT OF THE WAY"