BuiltWith gets more signups by offering up to 20 results for free.

BuilWith gets signups by offering up to 20 results for free. If you don’t know about BuiltWith, it’s a tool that allows you to know what techonologies, tools, frameworks or platforms are using others websites. Their main business model is ‘pay us for having the full list of companies with XZY technologies’. They offer the 20 first results for free, after that, they ask for your paid signup.

Digg Digg by Buffer to encourage more shares

Buffer provides a WordPress plugin (digg digg) to make it super-easy the way of sharing content of your blog. Even if it’s not their core business the development of WP plugins, they know their vast majority of their users might be using WP as platform to blog, so why not to make the path easier