This really is becoming an issue for me and for many others. I have a MacBook Air with a 128GB SSD and I find myself relying on Evernote more and more. I scan everything into Evernote and then shred/recycle the originals. If you have a small amount of data in Evernote then selective sync isn't a big deal...but if you're like me it is a HUGE deal and will eventually (likely by the first of 2013 for me personally) force me to delete the Evernote app from my Mac which I hate to do. The web client is certainly good, but there are things I need offline on my MacBook Air. I only need certain things mind you, but it's critical that this be an option.