Actually, Digg is probably big enough to avoid any penalties for doing a different redirect based on user-agent. I.e. 301 redirects for non-human useragents ins

Actually, Digg is probably big enough to avoid any penalties for doing a different redirect based on user-agent. I.e. 301 redirects for non-human useragents instead of forcing them to go through their framejacked page. We're actually experimenting with this on tinyarrows, using a full 301 redirect for bots but we test for the preview cookie for other useragents and give them a javascript redirect in that case. We kind of have to do the latter since we support so many different incoming domains, we need a way to test the cookie through a central domain, but don't want to eat SEO juice.