Do unsolicited reviews Perform solicited reviews - leave one right now on iTunes Commenting on posts on other sites that mention the influencers Taking their advice and implementing it, applying the apprentice model. Send them traffic but tell them before hand and ask them a question to make the traffic more relevant. Give them your best content. Send them customers. Build an influencer list. Be a customer and buy relevant products from them. Identify where influencers spend their time and then do the same. Be prepared to "pay to play" - it is an investment. Find an area where they are weak and you are strong. Ask for their opinion.