Problem with virtopia is the "% share rewarded for smaller miner. I cant say how or if its any different than larger pool and just finding more blocks..
Example with 2 cards at Virtopia getting 1.4-1.6 rv per block found (every 1-7hrs) vs multiple blocks getting 1.9-5.7 rv per hr, its not even the same playing field.
Im getting 4-7x more elsewhere with just 2 cards.. My payout in 2 days was more than 1 week there (even with the luck last week).
Nothing wrong with Charlie, and his site is best IMO for tracking your miner, etc.. Its just not for small miners, and prob why its down 50 miners since last week.
But hey, less of us, more rv for when you do find the blocks..