oh, congratulations !! i'm jealous !! did you replace them all with ebooks, or just decide you wouldn't read them again so why keep them ?
i've been doing that too but it's been a slow and often painful process... there are some books i definitely want to keep and some i definitely don't need to but where do you draw the line ?? especially since i don't want to give away anything i would want to read again before i replace it with an ebook, and sadly, i have a LOT of books that aren't available as ebooks (yet ?). Léo Malet, i'm looking at YOU ! (among others). i love the Nestor Burma series and definitely want to have it around, but the editions i have now are those cheap pulp editions so they should really go as soon as possible. plus i have a LOT of them.
*sigh* i wish i knew someone nearby with one of those scanners where you cut off the binding and drop the whole thing in... that would really make my life simpler. although with the proofing and the ocr error correction, it might also make me go right off Nestor Burma, and that would be a shame...