inzpire.me - An end-to-end solution for influencer marketing
The Influencer Marketing Stack - Free resources to launch a killer campaign
Top Instagram Influencers Ranking - Curated directory of Instagram bloggers by country&category
Twtrland - Build your twitter presence and connect w/ influencers
MakerAds - An unobtrusive ad network for makers
FameBit - Easiest Way to Find, Hire, and Work with YouTube Influencers