Nice! Good job
4 btc is not too bad, did you mine them?
here's to another 4!
Mining 4 bitcoin is quite difficult. He earn them by selling goods and services.
correct, you need 100 days with the most efficient miner out there, which will cost you almost 8 btc
they think we are stupid, if instamining is still working you cna try that way, or with pos coins also, at least they are free...