while there are a couple of on-line lists of available FCP plugins,
[
www.digitalzoo.com.au]
[
proapptips.com]
there are no websites like the one you want.
again, yes the window CAN be edited and re-arranged if you use the favourites bin.
however, there are 2 comment columns in the effect window by default.
you can enter notes there if you wish.
if you need visuals, drop your experiments into a timeline.
you can always open them and see what filers are in them,
or you could overlay some text with a description.
then YOU could make this website you're wishing for!
cheers,
nick