Reader David asks:

I begun technical trading in Jan.  I have done pretty well with screening for 13 day EMAs crossing 50 day EMAs, which in turn are above the 100 day EMAs.  What do you think of this approach?  I also look for smooth lines that show a long term recovery from previous highs...(VRSN for instance).  Maybe it's just the market going up...

David, a few thoughts.  What you've highlighted here is only the first part of the trading equation.  That is, you have a method of identifying trading candidates...and nothing more.  The real meat of trading is what happens AFTER you enter the trade.  That is, what is your methodology to take the winners and get rid of losers?  That alone can be the difference between a great strategy and one that will eventually bankrupt you.  For example, do you exit with a 2% profit and 80% loss (a high number of wins strategy), or do you exit with an 80% profit and 2% loss?  (a lot of losers, but big winner strategy.)  What do you do if you enter the trade and the stock just sits there?  Do you also exit if nothing happens after a few days?  

These are really the critical questions and they need answers before anyone can determine how successful your approach will be.