Share 'IMDb is "beta testing" a new link: "Rent it at blockbuster.com"'

It's my impression/observation that this just debuted in the last few days. It's right below the poster graphic in the left column, along with the "watch it now" button and the "buy it at Amazon" button. So far, it looks like those buttons are only added when they can lead you to content, at Amazon or hulu. But the "rent it at blockbuster.com" button seems to be showing up for lots of stuff tha…