Some quick improvement suggestions:
Wouldn't it be fairly easy to add pool fees to the profitability graphs?
I could if it was in the API feed for every block for every pool, historical data included. Otherwise it would be too easy to game. - just say you're changing to 0% fee, and then 'forget' to tell me when it's over. Or maybe I get busy and forget to make the adjustment for a week or two. If the stats are going to be useful they have to be reliable.
However, the main problem is that I'd have to make the results reliably reflect the reward method, which they don't - they're just a reflection of pool reward per share compared to expected. As an extreme example, the fee doesn't make sense when considering a PPS pool like Discus Fish (if I ever get a reliable feed from them again).
So for now I consider the chart to be more like an indicator of pool profitability rather than miner profitability.
Using the same Y-axis scale on the graphs might make them more readable. Currently some of them only have a mark for 100%.
So far I've used a free scale because some pools had very wide ranges and others didn't, but maybe that's useful to show? I'll give it a try over the next few weeks and see.
BTCGuildPPLNS should probably be listed as BTCGuild at this time.
Fixed! Thanks for pointing it out.