oversold / overbought ?

how do you know if a pair is oversold or overbought? (indicators, ideas...)

I know RSI, but looking for more.

I intend to cut half of my lots on this level (oversold/overbought) and let the rest run with trailingstop.

how about round numbers (double zeroes), s/r, the word "over" tend to be analyzed at specific times, but soon will change when price show another action.

I saw MACD by Phillip to be attractive also, MAs have more fans than any other, it is worth for observing.

Stochastic Oscillator

http://www.investopedia.com/terms/s/...oscillator.asp

In a clear trending scenario, I usually exit half my lot size at the previous swing's high, move stop to break-even, and let the second half run to the swing's full potential target.

Basically any oscillator is supposed to determine "oversold/overbought". The most common are: Momentum, CCI, Williams %R, Stochastics (basically a smoothed %R), MACD, DMI and RSI. When these indicators turn around is usually when price has hit an "OS/OB" level.

Don't spend too much time trying to figure out which oscillator is better than the other, because they're all very similar. Find one you're comfortable with and stick with it.