This was my first WP plugin I made, which uses the wp_head hook to add an og:image tag to your <head></head> tag.<p>The code can be found on: <a href="http://www.austinkpickett.com/blog/creating-a-wordpress-plugin/" rel="nofollow">http://www.austinkpickett.com/blog/creating-a-wordpress-plug...</a><p>Fork it, tear it apart, and let me know what I can improve on.<p>Thanks.