Cartoon characters can be powerful marketing tools. Just look at the Jolly Green Giant, the Pillsbury Doughboy, the M&M characters, Tony the Tiger or the Keebler Elves. However, there are some rules that apply to using a cartoon brand mascot effectively. Use properly, a cartoon brand mascot can make an indelible impression and help you build a powerful brand. It can make your product or service highly recognized and perhaps more importantly - liked by potential customers. It can help you stand out in highly competitive market places, add value, command a higher price and hence - more profitable.
Inkscape is also widely used by a lot of people, many of whom have created tutorials showing you how to use the software, and that makes it even easier to download a piece of vector clip art and use it in your project.
It can be very aggravating. True enough, these people need to get enough money to run their websites and that is a good way to do it. But for the person just looking for a little cool looking Christmas tree, or a reindeer or even a set of stars to go on the Christmas letter they are creating, it can be a lot of work to try and download a free design.