One of the most important parts about marketing your website is getting fresh content on your websites, and blogs are great at doing this. The question of this post isn’t answered quite so easily though, as managing a blog once you have it while ensuring the quality of the content you’re producing remains high.
A lot of things need to be considered when you put a blog on your website, like whether or not you’ll have the time to generate engaging content which people will actually want to read; including things like featured images, studies of the industry you’re working in, and case studies of the work you’ve done. It also massively reduces the value of the blog to your marketing campaigns if you start putting a lot of irrelevant content onto your website.
If you want a blog, but you think you won’t be able to provide at least one engaging blogpost a month, then it is probably not worth doing it at all.