Hi everybody! I'm a, uh, book junkie too. It's been seven days since I last bought. I used to keep myself strung out on Manning Deal of the Day emails to keep the buzz from the last purchase going. But then I discovered that O'Reilly's Safari books online also has Manning... and No Starch Press (the Learn You a Haskell/Erlang guys) in addition to several historically terrible publishers. But with O'Reilly, Manning and No Starch I haven't felt the need to buy. Except for Two Scoops of Django, dammit.
Downsides: no early access (it seems) and no physical books, which I love. But seriously, if you have a habit, it seems like a good deal. I just signed up for the 10 day trial and I'm loving it so far.
Disclaimer: No disclaimer, just a happy habitual book buyer.