Interestingly, if not ironic, the Preview application lets you annotate PDFs freely, regardless of any 'digital publishing' rights limitations like the adobe reader does. That's the chief reason I use OSX. Its the easiest and best PDF reader/annotator available, and I have a lot of books in PDF format, and I'm still converting the
.chm and other ebooks to PDF for just that reason.
If you're using Apple products, that means that you're looking at the world through a very bent straw, and Apple is doing the bending.
No not really. I'm not comfortable with the show "appstore" thing, and if it get's to be draconian I'll dump OSX, but that statement isn't true, unless you really want it to be.