Summary: High-level function that creates a new blog with the given parameters
Detail: This function is a high-level function that combines a number of other functions to create a new blog. It uses the install_blog(), install_blog_defaults() and add_user_to_blog() to set all the needed values in the database. This would be the preferred function to use when creating a new blog, rather than all the lower-level functions.
Summary: Installs the default values of a WP blog during the creation of a new blog
Details: This function does a lot, and depending on how you want your blogs setup, may be useful to modify. It sets up default values for such things as the blogroll, the first post, the first comment, the default category. Of these options, only the default post can be set in Blog Options, so for finer tuning of the end-user experience, editing this file might be helpful.