nothing wrong with a touch of reverb or delay..

.. even gritty distortion can just about work on some piezo electroacoustic pickups..


even.. wah wah

but the one FX i cant stand in folk [or just about any music]
is chorused guitar

too many late 70's and early 80's folk rock recordings ruined
by prissy 'tastefully' arpegiated over-chorused guitars spoiling the mix..!!!


..recently got an M-Audio Black Box USB recording audio interface..

it provides a few presets derived from Roger Linn Adrenalinn
beat-synched filter FX box..

http://www.rogerlinndesign.com/products/adrenalinn2.shtml



might be worth trying out a not so expensive used one,
sometime in the not too distant future..