Instapaper solves your reading later problem nicely. I'd give it a try - a simple bookmarklet and you can read whenever, wherever you want.
It forces the user to pick ahead of time which things they will and won't want to read later, instead of the simpler possibility. That being, letting the user just stop at any point in the interaction, confident in the assumption that the machine will take care of whatever annoying details are necessary for the page to still be there when they come back to where they left it.
Having to pick ahead of time isn't all that onerous, so the work-around is a pretty good one. It also has the benefit that you can pull it up on another machine, so that is nice. However, that too could be done more simply by having all of the user's browsers sync the their histories.