To answer some of the questions about upcoming features, Steve P. posted this to the Fictionwise's Yahoo group yesterday. Specifically, someone had requested the option of turning off full justification.
Don't fear, we are adding many new features. A new release should come
out sometime next week (assuming we don't have unexpected trouble). That
one will not have justification optoins but it will have several other
options people have been asking for (tap option to turn page, reverse
video mode, access to web content other than fw or er, some sorting
options on the shelf, etc.)
There will be releases every 2 to 3 weeks until we get the bulk of the
features in, so you will not have too long to wait.
For those confused, "fw or er" refers to Fictionwise and eReader.
I hope this is of some use to people here.