muzza64 - 3:03 pm on Jul 10, 2013 (gmt 0)
I think PageRank indicates the 'potential' power of a site but it doesn't reflect the overall health of the site at all.
I have a site which was PR3 when Panda hit and is now PR4 but traffic is worse than ever and traffic levels are nothing compared to other PR4 sites in the niche that are not affected by Panda.
I'm not sure what to look at to determine a site's health these days. Good rankings/traffic can disappear literally overnight.
I wouldn't consider any site that is heavily dependent on Google as "healthy".