How does blockchain.info get miner revenue? In the stats page of blockchain.info, I see the revenue of miners is $1,680,297.91. As I understand, its the total money that people have spent on buying their miners. But, i doubt that since its a bit too small compared to the total revenue of Bitcoin market. So I have some questions as following


What is the meaning of that number?
How does blockchain.info compute it? Will it be updated frequently?
This number means something else then you expect. It is the value of the reward for the miners, so exactly the revenue. 

I will show you how this number is calculated:

There are (currently, may differ in the future) 144 blocks mined. That means that there are 144*25 = 3600 bitcoins awarded to miners. The value of 1 bitcoin is  $465.07 USD according to the statistic page. The 3600 bitcoins have a total value of $1,674,252 USD. Add a little of the transaction fees (13.41473297 BTC, which is 0.37% according to the statistics page) and this will results in the 1.68 million USD revenue. 

Blockchain can simply calculate all these things from the different blocks, because everything is also on the site.