Man, we have some power readers in here! I can't believe that many people have read over 100 books already... I think that averages out to ~10 books a month (if they picked it up when it was available back in October/November) or about 2-3 books a week! Sheesh, not sure how you can maintain that kind of steam, though I'm duly impressed.
I haven't really kept a running total, but I usually take about a week or two to kill a novel (and that's if it doesn't stink) so I've only knocked over about 25-ish. My wife, on the other hand, just received hers back after the huge TigerDirect 4th of July deal and is rapidly gaining on my count... I think she's up to at least 15 in about a month and a half (course she's cleaning up in the Romance genre).
Edit: Since this is for all mobile devices, it still doesn't really ratchet up my count too much since I couldn't really get into reading on my small PDA screen. You guys/gals are still the bomb for reading all that you have. I usually only read in the evening just before I go to sleep, so that's anywhere from 20 minutes to 4 hours (depending on how good the book is, not how early I have to get up
).