Like many of these sites I was very skeptical of this one because they only pay out a very very small amount for free miners but I took a chance and I upgraded and now I have not tried more than once a day but at least once a day I have successfully been able to withdraw any amount soon I will try to mine a large amount and see if the withdrawal successful the largest withdrawal I have been able to make up to this point is.4 ltc but before I started upgrading with these guys and used my free account the withdrawal was a pitiful amount I believe it was around .00006 but after upgrading I did successfully get paid a larger amount for anybody worried about another scam like so many out there.