Although submitting your blog to the search engines is very similar to submitting your website, there are several differences that you should be aware of. Knowing these differences can help you get your blog indexed more quickly because you have submitted your blog correctly.
Regardless of whether you are submitting a blog or a website, if you are submitting to Google, you should create a sitemap. Although you should check your sitemap periodically to make sure Google isn't encountering any errors with your sitemap, once you submit it, you don't have to submit to Google again. All you have to do is keep your sitemap up to date.