Results on the poll are making a certain sense.

We are probably going to be able to eliminate 2 formats, .pmlz and .tcr, but we need to add .html. Which saves us a little bit of work. But not much. The reader-situation is still not settling into a handful of formats.

The pretty clear winners in the format race are epub and mobi/prc in that order, closely followed by PDF. I have a feeling once we offer .html that's going to be a popular choice also, since with it you can do conversions either in mobi software (Mobipocket Creator) or...