Bitcoin is really important for me and the world, for me bitcoin is really important because I put most of my wealth in bitcoin, I believe bitcoin will make a great future investment, for the world bitcoin is important because most of us had experience the efficient way for making transaction using bitcoin without the need to reveal your identity
Bitcoin is not fully anonymous. If you do not use it carefully, your identity will be revealed. For example, you should not share your address as it relates to your personal information. Now that you have made a cash conversion with your address to btc on any exchange site, your identity is known.
In general, a new btc address is used for each process.