Can you make it so I can auto-hide articles from certain sites? For example, I can't access *.tumblr.com urls from work, so I'd prefer not to even see them. E

Can you make it so I can auto-hide articles from certain sites? For example, I can't access *.tumblr.com urls from work, so I'd prefer not to even see them. Edit: actually, just disabling the link might work better.