I have a notebook (moleskine atm, but I've used a lot of other brands/kinds) for sketching out and expressing ideas/insights and I use Evernote for long-term storage, project management, and to store reference material. I also use Safari's reading list to hold on to things I want to read, but don't know if I want to save permanently.
Edit: I seriously keep everything in Evernote, whats up with the down votes?
Edit: I seriously keep everything in Evernote, whats up with the down votes?