I work for a small business with an online retail store. We use a commerce software to control our product listings and one of their companies actually built the site for us. When I started here in June, I was just entering product information into the commerce database. Since then I have pretty much taught myself HTML and CSS plus a decent amount of Photoshop and Illustrator. My job now consists of a combination of entering/updating product information, designing banners for the website, tweaking the prewritten code to suit the needs of our site/store, putting used products on ebay, creating powerpoint presentations, and maintaining our twitter/facebook accounts. When I was just doing data entry, I thought my wages were fair ($1.25 above minimum wage), but now that I'm doing more tasks, some requiring a lot more proficiency/skill, I'm not so sure. What should I be asking for? How can back up my argument? Is there a resource I can show my boss that would help?