Try using Pilgrim[0] if it's breadth you're concerned with. It's a simple reader bookmarklet that also creates a linked map of all links in a page[1], letting you visualize the breadth of linked info in a tree and glide back and forth between them in a simple way.

I just found it today and already I love it.

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0. http://pilgrim.are.na/ 1. http://i.imgur.com/z78eybj.png