1/ Bitcoin tries to solve integrity / nonrepudiation / authenticity problems. I.e. problems in cryptographic domain.
10/ More accurately, social networks set out to solve a profitability problem by creating a new medium for entertainment.
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
10/ More accurately, social networks set out to solve a profitability problem by creating a new medium for entertainment.