Bollinger Bands and System analysis

[me1984]

Hi,

I am currently researching a system using BOllinger bands for FX. I wanted to hear from anyone else who has used them for signals for entry, and what your thoughts are on them?

Also, what are the key metrics to look out for when backtesting a system?
The below link can get people started who do not have any ideas

Aug 7: How To Analyze Trading Systems - Part 14