Not sure yet what to think of btc mining at multipool if we keep switching to other coins before ever finding a first block.
Even at 10 TH we'd still only find about one block per day. Variance will be high until we reach the neighborhood of 100 TH. (or the equivalent at future difficulties)
There is a small loss of efficiency from switching (about 1% over 10 minutes). For both coins that we switch to (TRC and ZET) we're normally on them for way more than 10 minutes, and since the profitability needs to be more than 1% higher to even consider switching, it more than makes up for the small loss in efficiency.
There's also a very minute chance that a block could be found just as we switch (far less than 1%).
The proportional payout system ensures that all shares will be paid when a block is finally found, so really the risk/reward of switching should be obvious.. If we didn't switch we wouldn't be Multipool.
