Flat Fee Listings - what do you think?

in a recent discussion with a potential strategic alliance partner, the subject of flat fee listings came up as well as "kick back" buyer representation - has anyone had some experience with this and how do you feel about it?

my feelings have been mixed - very tempting to get involved - but also it feels a bit like a "sell-out"!!

i would apprecaite some feedback on this one - it is a real dilemma for me