Stumbleupon stumbles, now just link-jacking

Stumbleupon, the hugely popular social networking site, is now blocking direct links out of their site. All content is iframed and if you are logged in, they do not provide a way to go to the linked site.

Pity. They used to be genuinely innovative. But now they’re creating a walled, locked garden that gives bloggers and news providers no reason whatsoever to participate. Good luck with that.