. About a year ago, before I became a HubSpotter, I stopped wasting my company's precious money and fired our marketing agency. It wasn't that difficult of a decision to make, but it was an extremely expensive lesson to learn -- to the tune of about $70,000.  In a previous life, I was a small business owner. When I joined the company in September 2011 (we'll call it the Acme Startup Company), my business partners had just spent two years in research and development. They managed to round up enough money to get them through the early days and come out on the other end with a prototype for the Acme software product. When they asked me to work with them, they were nearing a product launch. And part of their strategy to support…