Coming up with brilliant product ideas for a profitable product to offer online will oftentimes strike an eCommerce entrepreneur when they least expect it. Oftentimes, however, it's something you need to be on the alert about. The internet is a goldmine of ideas and inspiration, but where do you begin as a new entrepreneur? Because at a loose end, online searching will only get you so far, we've curated a list of the top resources to help you get started. This…