What happened to P2Pool?  It's been a while since I've mined on P2Pool.  I got a shiny new Antminer S7 so I fired up my old P2Pool node.  I see that the time to block is 10 days!  Back in the day we used to find blocks every few hours.  Why doesn't anyone mine on P2Pool anymore?  Despite the high variance, from what I can tell the luck has been very good.  There's no need to trust pool operators.  All the old reasons are still valid, but there's only 3 smallish farms mining on P2Pool and a handful of small guys like me with one or two rigs.