diff --git src/bp-blogs/bp-blogs-activity.php src/bp-blogs/bp-blogs-activity.php
index 5c91e83..a6ec5b3 100644
--- src/bp-blogs/bp-blogs-activity.php
+++ src/bp-blogs/bp-blogs-activity.php
@@ -624,6 +624,15 @@ function bp_blogs_record_activity_on_site_creation( $recorded_blog, $is_private,
 	if ( ! $is_private && ! $no_activity && bp_blogs_is_blog_trackable( $recorded_blog->blog_id, $recorded_blog->user_id ) ) {
 		bp_blogs_record_activity( array(
 			'user_id'      => $recorded_blog->user_id,
+
+			/**
+			 * Filters the activity created blog primary link.
+			 *
+			 * @since 1.1.0
+			 *
+			 * @param string $value Blog primary link.
+			 * @param int    $value Blog ID.
+			 */
 			'primary_link' => apply_filters( 'bp_blogs_activity_created_blog_primary_link', bp_blogs_get_blogmeta( $recorded_blog->blog_id, 'url' ), $recorded_blog->blog_id ),
 			'type'         => 'new_blog',
 			'item_id'      => $recorded_blog->blog_id
diff --git src/bp-blogs/bp-blogs-functions.php src/bp-blogs/bp-blogs-functions.php
index be32eef..83f465a 100644
--- src/bp-blogs/bp-blogs-functions.php
+++ src/bp-blogs/bp-blogs-functions.php
@@ -65,7 +65,14 @@ function bp_blogs_get_blogs( $args = '' ) {
 		$r['include_blog_ids']
 	);
 
-	// Filter and return.
+	/**
+	 * Filters a set of blogs.
+	 *
+	 * @since 1.2.0
+	 *
+	 * @param array $blogs Array of blog data.
+	 * @param array $r     Parsed query arguments.
+	 */
 	return apply_filters( 'bp_blogs_get_blogs', $blogs, $r );
 }
 
@@ -246,9 +253,26 @@ function bp_blogs_record_existing_blogs( $args = array() ) {
  */
 function bp_blogs_is_blog_recordable( $blog_id, $user_id = 0 ) {
 
+	/**
+	 * Filters whether or not a blog is globally activity stream recordable.
+	 *
+	 * @since 1.7.0
+	 *
+	 * @param bool $value   Whether or not recordable. Default true.
+	 * @param int  $blog_id Current blog ID.
+	 */
 	$recordable_globally = apply_filters( 'bp_blogs_is_blog_recordable', true, $blog_id );
 
 	if ( !empty( $user_id ) ) {
+		/**
+		 * Filters whether or not a blog is globally activity stream recordable for user.
+		 *
+		 * @since 1.7.0
+		 *
+		 * @param bool $recordable_globally Whether or not recordable.
+		 * @param int  $blog_id             Current blog ID.
+		 * @param int  $user_id             Current user ID.
+		 */
 		$recordable_for_user = apply_filters( 'bp_blogs_is_blog_recordable_for_user', $recordable_globally, $blog_id, $user_id );
 	} else {
 		$recordable_for_user = $recordable_globally;
@@ -275,9 +299,27 @@ function bp_blogs_is_blog_recordable( $blog_id, $user_id = 0 ) {
  */
 function bp_blogs_is_blog_trackable( $blog_id, $user_id = 0 ) {
 
+	/**
+	 * Filters whether or not a blog is globally trackable.
+	 *
+	 * @since 1.7.0
+	 *
+	 * @param bool $value Whether or not trackable.
+	 * @param int  $blog_id Current blog ID.
+	 */
 	$trackable_globally = apply_filters( 'bp_blogs_is_blog_trackable', bp_blogs_is_blog_recordable( $blog_id, $user_id ), $blog_id );
 
 	if ( !empty( $user_id ) ) {
+
+		/**
+		 * Filters whether or not a blog is globally trackable for user.
+		 *
+		 * @since 1.7.0
+		 *
+		 * @param bool $value   Whether or not trackable.
+		 * @param int  $blog_id Current blog ID.
+		 * @param int  $user_id Current user ID.
+		 */
 		$trackable_for_user = apply_filters( 'bp_blogs_is_blog_trackable_for_user', $trackable_globally, $blog_id, $user_id );
 	} else {
 		$trackable_for_user = $trackable_globally;
@@ -344,6 +386,14 @@ function bp_blogs_record_blog( $blog_id, $user_id, $no_activity = false ) {
 	bp_blogs_update_blogmeta( $recorded_blog->blog_id, 'thread_comments_depth', $thread_depth );
 
 	$is_private = !empty( $_POST['blog_public'] ) && (int) $_POST['blog_public'] ? false : true;
+
+	/**
+	 * Filters whether or not a new blog is public.
+	 *
+	 * @since 1.5.0
+	 *
+	 * @param bool $is_private Whether or not blog is public.
+	 */
 	$is_private = !apply_filters( 'bp_is_new_blog_public', !$is_private );
 
 	/**
@@ -844,6 +894,14 @@ add_action( 'user_register',    'bp_blogs_add_user_to_blog'        );
  * @return string
  */
 function bp_blogs_get_allowed_roles() {
+
+	/**
+	 * Filters the allowed roles a member must have to be recorded into bp_user_blogs pointer table.
+	 *
+	 * @since 2.1.0
+	 *
+	 * @param array $value Array of potential roles user needs.
+	 */
 	return apply_filters( 'bp_blogs_get_allowed_roles', array( 'contributor', 'author', 'editor', 'administrator' ) );
 }
 
diff --git src/bp-blogs/bp-blogs-template.php src/bp-blogs/bp-blogs-template.php
index c7e1380..b591dd0 100644
--- src/bp-blogs/bp-blogs-template.php
+++ src/bp-blogs/bp-blogs-template.php
@@ -645,7 +645,7 @@ function bp_blog_last_active( $args = array() ) {
 		/**
 		 * Filters the last active date of the current blog in the loop.
 		 *
-		 * @since
+		 * @since 1.2.0
 		 *
 		 * @param string $last_activity Last active date.
 		 * @param array  $r             Array of parsed args used to determine formatting.
@@ -1402,6 +1402,13 @@ function bp_blog_create_nav_item() {
 
 		$output = '<li id="blog-create-nav">' . $create_blog_button . '</li>';
 
+		/**
+		 * Filters the Create A Site nav item output.
+		 *
+		 * @since 2.2.0
+		 *
+		 * @param string $output Nav item output.
+		 */
 		return apply_filters( 'bp_get_blog_create_nav_item', $output );
 	}
 
diff --git src/bp-blogs/classes/class-bp-blogs-blog.php src/bp-blogs/classes/class-bp-blogs-blog.php
index f2b07cc..1e5e039 100644
--- src/bp-blogs/classes/class-bp-blogs-blog.php
+++ src/bp-blogs/classes/class-bp-blogs-blog.php
@@ -75,7 +75,24 @@ class BP_Blogs_Blog {
 	public function save() {
 		global $wpdb;
 
+		/**
+		 * Filters the blog user ID before save.
+		 *
+		 * @since 1.0.0
+		 *
+		 * @param int $value User ID.
+		 * @param int $value Site ID.
+		 */
 		$this->user_id = apply_filters( 'bp_blogs_blog_user_id_before_save', $this->user_id, $this->id );
+
+		/**
+		 * Filters the blog blog ID before save.
+		 *
+		 * @since 1.0.0
+		 *
+		 * @param int $value Blog ID.
+		 * @param int $value Site ID.
+		 */
 		$this->blog_id = apply_filters( 'bp_blogs_blog_id_before_save', $this->blog_id, $this->id );
 
 		/**