Influenster

Influenster runs a variety of different types of campaigns, but they generally involve sending invited users a complimentary product or service to sample and discuss on social media.

[11] It uses Facebook, Twitter, Instagram, YouTube, Tumblr, Foursquare, Google+, a multi-platform blog widget, and friend referrals to determine Impact score.

Impact points are largely calculated based on the number of followers or friends a user has on any given social network.

[12] Influenster allows users to unlock "Expert" and "Lifestyle" badges through completing survey questions about their interests and behaviors, writing reviews on products, answering other users' questions, and sharing Influenster product pages across social media channels.

[13] In 2016, Influenster raised $8 million in financing from Ebates, a leading online cashback shopping service.