Adobe’s Flash plugin has become a stalwart in online multimedia content with a massive install base, so why is it suddenly the least popular kid on the block? Back when Netscape ruled the web and Microsoft was the pretentious young upstart nipping at its heels, HTML was the most dominant form of content on the web by a huge margin. Nothing about video, audio or multimedia content made it appealing to work with or serve to visitors, but the demand was great, so great that what ended up happening was inevitable, if not entirely predictable. How Flash Rose To Dominance By version 5 Internet Explorer had…