Become somebody first by building up your own social media presence; that makes you somebody. Before starting outreach, you must be established. The more followers you have, the better your response rate will (probably) be.
Old or infrequent content can be a problem for someone investigating your social media worth. You may need to remove dates from old articles on your blog, or backdate them to show a longer history of established content. If you’re trying to bring attention to your blog, then you’re going to need to host it on your own domain name (not as a subdomain of WordPress.com or blogspot.com). You don’t want to look cheap and amateurish.