Since you chose your product or promotional item, next your keyword research will be a fundamental part of online marketing of all kinds, and they definitely include blogging. Blogs are good for ranking well in search engines because of their structure and frequently-updated content, but if you don't use the words people are actually interested in and actively searching for, you're missing a lot of traffic. This is the keywords that you use and if they are not the correct ones than you will miss possible clients. But the value of keywords goes well beyond SEO copywriting. In fact, close your eyes for a moment and imagine a world where search engines don't deliver traffic at all. So of'course your keyword research will still be valuable.