For the past 6 monthsish there has been quite a bit of .02/.04 (mBTC) games running including a no-rake one. That's about the lowest that makes sense. For lower fiat value I guess there is pokershibes (dogecoin). Though looking through your post history, I think min w/d is still .02 :/.
Yay my first seals post here.
-ncsu
Pokershibes is for dogecoin guys and not for the ones who believe in bitcoin.
1Bitcoin=1Bitcoin, and you have got to respect it.