On siacoin.com it mentions a 3.9% fee, is that still in debate or are you definitely creating more sianotes and increasing it to 10%? Also, I noticed on the asset exchange that there is a buy order for 20 sianotes at 2,000NXT each by the asset issuer.  Is nebulous trying to buy back sianotes or is that just to set a price floor?

Also, I only really know how to mine scrypt or sha on a mac.  Could you point me to something I can download that would let me CPU or GPU mine sia on my mac?  Preferably with a GUI?