I've been using blendle for a year or so and I'm happy with it. The only thing is that there is a disconnect between surfing the web, hitting the paywall, and then finding that article on blendle. There's no "buy now with blendle" button, unfortunately. Kind of obvious, because they actually all want to sell me their subscription, but annoying nonetheless. Not harder than the "search title with google to get free article" routine, though.