I'm using Ubuntu for 3 years now and I'm pretty impressed so far. I don't even think going back to windows or mac os. I'm a physician and have to do a lot of writing work. I must say that I'm very disappointed with the OpenOffice Suite and correlates like Abiword. I think the community should be capable of implementing something completely new for the writing process. First, every single writer has the right of a silent and distraction-free environment and we should definitely develop a text oriented way of writing. This is pretty well accomplished by LyX. I think most of the professionals considers far more adequate the way LATEX handles the document by going out the way of the writer and his ideas. I'm not a programmer, i wish i could develop the ideas i have in mind for this, but i'm using this space to talk about them and see if someone get interested.

Students, and ofcourse other people, often use ebooks these days which are available in many different formats including PDF PDB CHM etc. Ubuntu doesn't support all out of the box. Plus one cannot use these books interactively; one should be capable of opening an ebook and then should be able to make notes, bookmark things, underline/highlight things and do all kind of activity required by a student. Since a lot of people use ebooks and with the advent of netbooks & tablet PCs, this use is going to increase.

AbiCollab just launched and i was thinking, using UbuntuOne i can have all my documents on the hard-disk and online too.
here is the service https://abicollab.net/