Quote from oilfxpro:
I use lwma 18 on 15 minutes charts , for several purposes , many traders use 20 ema of bollingers , some use just a 20 ema or 23 ema.If price moves far away from lwma 18 , it is often sign of overbought price or oversold price , some traders like price to retrace to lwma 18/ema 23 before entry .If price is above lwma 18 , it provides good support for longs scalps , it it goes below i close longs and if it goes above i close shorts , if it goes below I scalp shorts.
Another way to see overbought/oversold areas is tops and bottoms of channels , and avoid using rsi in trending markets for these indications.
http://www.ino.com/blog/2011/05/rsi-–-overbought-oversold-or-overplayed/
I use RSI all the time but not based on closes and use it especially during trending markets. As a Scalper, you just learn which highs/lows to counter-trend and which to go with trend. Matter of fact, RSI is a great tool for a trend trader during hard trends as it shows up with many divergences.
Quoting those who sell services, if they knew how to trade they be doing size and not messing with charging folks $300 a month for their cornball services.