I have a pile of unread pbooks and a file of unread purchased ebooks, along with a file of free ebooks. I also have 3 large bookcases full of pbooks that I have read at least twice. Any book that I have read and enjoyed goes on a holding shelf. If, I've read it at least twice and still enjoy it, it goes in the bookcases.
Even though I have more than enough to keep me busy for a while, I will still pick up interesting pbooks that are very cheap (under $2), download free interesting ebooks, and purchase from MR authors who have books that catch my attention.
The whole point is that I read like I eat. I choose what I am in the mood for or what I am craving.

I like having a *library* to choose from.
It may be one month or it may be 6 months before I read an ebook that I have purchased or obtained for free. I believe that most authors who are also readers will understand this. I don't like being pressured about anything, reading included.
I enjoy supporting MR authors who publish on smashwords and who become active members in other areas of our forums. I don't feel I write great reviews. I know I need to catch up and at least post something to support those authors whose books I enjoy, so I plan on really trying to do this on smashwords.