Does anyone know how many coins are being mined with POW vs POS nowadays?
Hello bitdwarf
If your question is: how many YACs are being mined with PoW vs PoS, then looking at
http://explore.grokonet.com/note that a PoW block reward is 70.69YAC, and a PoS block varies according to how much is "at stake" by the holder.
If your question is: how may various crypto currencies are PoW mined vs PoS mined, then you might look at the now 636 *coins listed at
http://coinmarketcap.com/all/views/all/ for example, and count which are PoW and which PoS. Note that it is not so clear with a coin like YAC that is both!

Ron