There are many. Chances are you're focusing on startup ideas that appeal to "modern hipster". Usually, white, middle-class, male, nerdy, tech savvy, 20-35, ea

There are many. Chances are you're focusing on startup ideas that appeal to "modern hipster". Usually, white, middle-class, male, nerdy, tech savvy, 20-35, easily whipped into a frenzy. The founders of these startups, being of the same demographic, have a high visual appeal to their prospective customer base. They're photogenic and in some ways, aspirational. Hence, they make popular blog posts possible. Giving them high marketability and value to online news organisations (your main source of news) who are also targeting this demographic. For example, notice on kickstarter, who gets the most funding? On the other hand, other profitable startup ideas that do not appeal to the demographic of the blogs and websites you visit are missed. When's the last time you visited a traditional forum? or any site other than your top 10 bookmarks and a bunch of links you got from them?