The blog_recent_tag_posts function returns a sequence of blog post objects for a specified tag or tags, sorted by most recent first. This sequence of posts can be saved into a variable and iterated through with a for loop, creating a custom post listing of posts by a particular tag or tags.

The function takes three parameters. The first parameter specifies which blog to collect posts from. The value should be "default" or the blog ID of a particular blog (available in the URL of the Blog dashboard).

The second parameter specifies which tags to use, either a single tag or an array of up to 10 tags separated by commas. This parameter can use tag.slug for a particular tag from content.tag_list or accepts a lowercase hyphenated name such as "marketing-tips".  Spaces in tag names must be converted to hyphens.

The third parameter specifies how many posts are retrieved. 

The first line of the example below demonstrates how the function returns a sequence of posts by tag. The second line shows the function used to save a sequence in a variable which is then looped through. Any blog post variables should use the name of the individual loop item rather than content.. In the example, tag_post.name is used. This technique can be used, not only on blog templates, but also regular pages. 

You can use this function as the foundation for a related posts section of an individual blog post layout. To learn more about creating a related posts section, check out this tutorial.