Bitcoin [...] is the only [...] blockchain which is cared about That is not correct. Bitcoin is by far the largest, but people also have non-trivial amounts in

Bitcoin [...] is the only [...] blockchain which is cared about That is not correct. Bitcoin is by far the largest, but people also have non-trivial amounts in various alt-coins: http://coinmarketcap.com/ http://coinmarketcap.com/ In terms of your Browser-analogy: Next to IE6 (Bitcoin) we also have Safari (Ripple), Firefox (Litecoin) and whole range of smaller players. They all speak dialects of the blockchain protocol.