What are some alternatives?
When comparing Fupio and Reddit, you can also consider the following products
Mastodon - Mastodon is a decentralized, open source social network. This is just one part of the network, run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome!
Quora - Quora is a place to gain and share knowledge. It's a platform to ask questions and connect with people who contribute unique insights and quality answers.
MySocialApp - Seamless Social Networking features for your app
Digg - Digg delivers the most interesting and talked-about stories on the Web right now.
Manyverse - A social network off the grid
Raddle - A web-based forum where users submit links, pictures, posts, etc.