Search engines value relevant, up-to-date text, and inbound links, and a business blog is the perfect solution to provide you with both. Almost as an added bonus, a blog also brings in human visitors, introduces them to you and your website, and potentially results in increased sales.
A blog is similar to a journal, except online. It consists of short articles, written as often or as rarely as you want, on any subject you want. Obviously it's better if you can write them regularly, and sticking to writing about your company and your industry will be more effective at pushing your website up the Search Engine Rankings, but it's equally important to make it interesting to your visitors. People visiting can comment on what you've written, and post links to your blog on various social networking sites.
Perhaps I haven't said it loud enough....SEARCH ENGINES LOVE NEW CONTENT!!!! A well written blog will attract human visitors and search engine's spiders both of which can be extremely beneficial to your business, both in SEO terms and in terms of increased sales. More content leads to more visitors, which both lead to a higher position in the Search Engine Rankings Pages, which leads to more visitors...and ultimately, the more visitors you have, the more chances you have to convert them into customers.
If you find you are too busy running your business to write the blogs, we're happy to write further blogs for you, either on an ad hoc basis, or as regularly as you want. For an example of one style of blog writing, take a look at our Ikroh SEO Blog. As with every part of your website and company branding, it is important to maintain a coherent image to your customers, so when we write your blog, we will tailor our writing style and the content to fit your business.