I repeat... lol... this is less of an issue with slow-block coins. It is only the less populated faster coins, where the percents are waaaay off. Making them look a lot more valuable to mine, then they really are in reality.
MNC, WDC, FST, LKY, DGC, MEG, MEM, BBQ... etc...
As for pools that do this already... Most pools have an API, they just have to add that accepted/rejected value to the list of available data. Ask, they will add it, if it brings them more miners. They may want a mention of the pool. (Eg, Stats provided by "www.somepool.com" for "MNC". When people click on the data % values, to see where you get your numbers from. Like when they click the links to the exchanges.)
This is my 4-days worth of mining "CAP" "Bottlecaps"...
Using one of my machines, mining @ 3Mhs (6x 7970's running stock about 500Khs/ea) 3200 CAP coins
A: 46, R: 13
A: 40, R: 12
A: 48, R: 14
A: 31, R: 23
A: 54, R: 12
A: 49, R: 14
Totals
A: 268, R: 88 = 356 submitted
100%/356 = 0.280899
268*0.280899 = 75% Accepted / 25% Rejected
Thus, Your 178.87% Profit should be, 178.87%*0.75 = "134.15% Profit adjusted for stales", not 178.87% which would be 100% accepted and 0% rejected.
I don't have the bandwidth nor the resources to mine every coin I list as that would take a lot of mining hardware. Is your ultimate suggestion that I just shut down the site as it is misleading?
Maybe I can work in a mechanism where the users of the site submit the pools they are using? The first issue is identifying all the pool sites and then convincing each of those pools to add in the extra data (and still not sure how to handle the pools that refuse - maybe delist the entire coin if one major pool for a given coin refuses to give the data)?
That being said - you have hit on a portion of my formula already - faster block coins DO have a lower adjusted profitability on my site.