Suggestion: Make all of the tabs present the information for the active coins more at the the top.
With the current format, as I flip through the tabs I get the impression that everything is broken because of all the 0 Ghz hashrates and "invalid shares." This may turn off people who go there to check it out. You want the first thing they see to be signs of a healthy pool that is functioning correctly.
Also, great job in general, I think this is great.