FILD is something of a mind-virus in the lucid dreaming community, a shoddy technique that gets passed along due to the naivety of newbies and the power of placebo.
I've put together a video giving a detailed explanation of FILD, its good points, its bad points, and why it really needs to be renamed.
I hope you enjoy it...
https://www.youtube.com/watch?v=thbr8Tm1E6U