Reddit - Reddit gives you the best of the internet in one place. Get a constantly updating feed of breaking news, fun stories, pics, memes, and videos just for you.

4chan - 4chan is a simple image-based bulletin board where anyone can post comments and share images.

Contextly - Contextly provides content recommendation system for publishers.

Digg - Digg delivers the most interesting and talked-about stories on the Web right now.

Tildes - A non-profit community site driven by its users' interests

MGID - MGID is a native advertising platform to acquire visitors, monetize websites, build​ new audiences, and grow traffic.