I checked out this website (JukePop.com) and I, too, am curious about it. Like you Jonathan, my goal would be to get readers and also feedback.
I have a serial project - a soap opera/family drama - that I've been working on for 30+ years. I think this might be a good venue to try it
out since each chapter is a month in the life of the family and the series runs 8 years (with each year a separate book). This could be
the place to put it out there and see how it would be received.
From what I've read, the author still holds all rights to the work and can publish it elsewhere in whatever form the author chooses.
So, I don't foresee any problem - but then I do tend to be a bit naive. :) Before I start, I want to have the first 6 months finished so I
can always be ahead of the game.