I have, I loved it, even thought it made me pretty screwy for a few months afterwards. Ive tried to recommend it to people – but not everyone seems to be able to handle it at all. I wouldn’t recommend this book to anyone without warning them first. (Or, at least, taking their measuring tape away.)
I can get sales figures for House of Leaves, but I can’t tell you how many of the buyers actually read it. As well, this number becomes convuluted with the secondary book market involved.