I just signed up for JSTOR. (Academic article library).
It seems like a medium ground for free vs paid - you can have up to three items on your "shelf" that must stay there for 2 weeks (aka to prevent high speed flipping). But it doesn't look like you HAVE to remove them, which is interesting, so if you really like some article you can leave it there for x period of time.
I stuck a couple of asian studies articles up there and am leaving one slot for later.