I found it takes some investment before it really becomes useful. I didn't get it at the start but now being able to search through notes and clippings I made years ago is really helpful. They have also made great improvements in notebook organisation which I love. I find it a bit unsettling that I'm storing so much data with one company (not that I don't trust them but that at some point they might go away) but they seem to me like a great company who would make it easy to get all your data out if they were ever shutting down.