Although I don't really surf with the sidebar open, this Links Sidebar Panel works great for blogs with blogrolls. It scrapes the current page and lists all the links on the sidebar.
Here's a partial screenshot of the panel in action on CamWorld:
[link via Andrew Wooldridge]
The gestures plugin (see link) also offers a handy shortcut for blogrolls.
Using the finishing-move Right-Up-Left after dragging over a series of links opens each link in a new tab.