Ahrefs.com - Use social community building and influencer marketing platforms like GuestCrew.
SearchEnginePeople.com - Use Content Discovery Tools And Paid Promotion. I recommend using Guestcrew.
SocialMediaExaminer.com - Guest Crew is a good jumping-off point, whether you are looking to get visibility, receive more web traffic and develop relationships
HuffingtonPost.com - Start a Crowd Speaking Campaign. Test your campaign design and generate buzz by promoting the concept of social media