StoutFiles - 3:16 pm on Feb 2, 2012 (gmt 0)
Here's an example where a site redesign hasn't caused a catastrophe in traffic falls.
People complain about Facebook's annual redesigns, but eventually come around. The key is that you can get away with it if:
A) your site has enough good content to get past the initial hatred
B) you don't desperately need traffic from search engines to stay afloat