In the mean time ViaBTC is mining empty blocks so as to increase the number of transaction backlog. Very sneeky thing to be doing.
They aren't. Provide the link or GTFO
Why is viabtc then mining empty blocks?
Using this service is bad for Bitcoin, unsurprisingly : http://hackingdistributed.com/2017/02/27/smallest-first-bad-for-bitcoin/