Reading Downloaded Books?

Does /book/ read books that they download or do they buy the things that they read?

Personally, I do both. As much as I prefer reading a book that I can take with me anywhere and read in a more comfortable setting, I have read books in .pdf before, although I didn't like it.

I'm really waiting for E-readers (like the kindle) to come down in price.  I love the concept behind them and would love to be able to carry around 20+ books with me wherever I go.