Let's be honest: it's a nice problem to have if your shelves are too full of books you haven't read.
My shelves are full of books I haven't read!
I still have books from last summer's RWA Nationals conference I haven't read (mostly on the bottom shelf there). I've made a dent in what I brought home, and I gave away half of my haul (with so many free books, I was really choosy to begin with and still ended up shipping books home).
I'm officially imposing a No Library Books rule this summer.
(One exception: audio books which I listen to while driving.)
Don't even ask me about my e-reader.... Possible moratorium on cheapie ebooks as well.
Do you have too many books on your TBR shelf? What strategies have you used to whittle down the list?