Whether you are promoting your business, a product or simply yourself, consistency is everything. Your advertising, signs, promotional materials, web site, etc all have to look like they belong together if you want to reinforce yourself to your audience and get the most from your advertising efforts.
Statistics show that it takes a minimum of 3 - 6 times for someone to see your ad before most will even read it. If the ads you are running in various publications or web sites are different, then you are starting and restarting that count with every different placement and potentially having to reestablish yourself and your brand with the same people over and over again.
In contrast, whether your company is large or small, we can create a consistent ad package for you that starts with your logo. These days, we can use that logo in all kinds of places, we just want to be sure that whatever it's on, people know it is you/your company.