Why have promos around? They’re great to send to bloggers who are writing about your product or related topics. For example, here are some promos sent by air freshener company Little Tree in response to a blog post asking readers for ideas for new car air freshener scents. By sending the promos they were able to be featured in the blog, a great way to get some publicity. More importantly, they were getting their products and brand in front of people who were already interested in it.