BL Direct and Google Scholar

This may be new, or maybe I never noticed it before, but Google Scholar results now sometimes include a link below the citation that says "BL Direct". This takes you to a page where you can order a copy of the article from the British Library document delivery service. For the usual high costs: 22 pounds plus a service charge of at least another 8.95 pounds (where's that little pound symbol on the keyboard, anyway?). Hardly a bargain, but another option for a desperate student with a credit card if we don't have what they need. The link seems to occur on about half the results for what I was searching.