Quote from lindq:
In order to play pullbacks, you will usually be entering at the point of max fear in the stock, and also generally in the market. No pain, no gain. This takes a lot of confidence in your system, and a lot of experience.
Excellent advice above, plus some links you might have read:
Fibonacci Retracements
http://www.elitetrader.com/vb/showthread.php?s=&threadid=4112
Distinguishing between retracements & reversals
http://www.elitetrader.com/vb/showthread.php?s=&threadid=24933
TSCM - Monthly Pullback Candidate
http://www.elitetrader.com/vb/showthread.php?s=&threadid=26865
Pullback Entry Strategy
http://www.elitetrader.com/vb/showthread.php?s=&threadid=26275