There is no simple answer to this question as it depends on the blog platform and the specific policies of that platform. However, generally speaking, most blog platforms will allow you to write about individuals without getting permission from them.
However, there are a few exceptions to this rule. For example, if you are writing about a company or product that the individual is associated with, you may need their permission.
Similarly, if you are writing about a sensitive topic – such as the personal lives of celebrities – you may need to get the individual’s consent before publishing.
Ultimately, it is important to be aware of your blog platform’s policies before writing about anyone in a blog post. If in doubt, please contact your blog platform’s support team for clarification.