There is more about the complaints about Nightshade on this blog (fans of RASFW will recognize the name):
http://james-nicoll.livejournal.com/2525655.html
There is
a Publishers Weekly blog post about the complaints and
a response from Nightshade.
I really hope this works out. I like a lot of the books they offer, and I'd hate to see them fall apart as so many other small presses have done.

I was also sad to see
that Prime Books has come under similar criticism as I like much of what they offer as well.