deadsea - 4:42 pm on Jul 5, 2012 (gmt 0)
A load time worse than 3 seconds seems to hurt rankings. Google has said they owly penalize the slowest couple percentage of sites. That would be in the 10+ seconds to load range. However, users start clicking back to the SERPs if the page takes longer than 3 seconds to load. The high click-back rates caused by slow load times can have a dramatic negative effect on rankings.