Yes, with the use of the extension your blog inside Magento can be highly customized. This means you can choose one of the four layout types, as well as the number of listed posts on the homepage. Read on to see how to make all the settings.
Some of your posts may be included in multiple categories and have several tags. That's why different category and tag pages can posses the same content that search engines mark as duplicated. Hide these pages from indexation to avoid this problem.