public function update_post_meta( $post_id = 0, $_post = false ) {

		// Define local variable(s)
		$as_submitted = false;

		// Setup some variables
		$post_id = (int) $post_id;

		// Ensure we have a post object
		if ( empty( $_post ) ) {
			$_post = get_post( $post_id );
		}

		// Set up Akismet last post data
		if ( ! empty( $this->last_post ) ) {
			$as_submitted = $this->last_post['bbp_post_as_submitted'];
		}

		// wp_insert_post() might be called in other contexts. Ensure this is
		// the same topic/reply as was checked by BBP_Akismet::check_post()
		if ( is_object( $_post ) && ! empty( $this->last_post ) && is_array( $as_submitted ) ) {

			// Get user data
			$userdata       = get_userdata( $_post->post_author );
			$anonymous_data = bbp_filter_anonymous_post_data();

			// More checks
			if (	intval( $as_submitted['comment_post_ID'] )    === intval( $_post->post_parent )
					&&      $as_submitted['comment_author']       === ( $anonymous_data ? $anonymous_data['bbp_anonymous_name']  : $userdata->display_name )
					&&      $as_submitted['comment_author_email'] === ( $anonymous_data ? $anonymous_data['bbp_anonymous_email'] : $userdata->user_email   )
				) {

				// Normal result: true
				if ( $this->last_post['bbp_akismet_result'] === 'true' ) {

					// Leave a trail so other's know what we did
					update_post_meta( $post_id, '_bbp_akismet_result', 'true' );
					$this->update_post_history( $post_id, esc_html__( 'Akismet caught this post as spam', 'bbpress' ), 'check-spam' );

					// If post_status isn't the spam status, as expected, leave a note
					if ( bbp_get_spam_status_id() !== $_post->post_status ) {
						$this->update_post_history( $post_id, sprintf( esc_html__( 'Post status was changed to %s', 'bbpress' ), $_post->post_status ), 'status-changed-' . $_post->post_status );
					}

				// Normal result: false
				} elseif ( $this->last_post['bbp_akismet_result'] === 'false' ) {

					// Leave a trail so other's know what we did
					update_post_meta( $post_id, '_bbp_akismet_result', 'false' );
					$this->update_post_history( $post_id, esc_html__( 'Akismet cleared this post as not spam', 'bbpress' ), 'check-ham' );

					// If post_status is the spam status, which isn't expected, leave a note
					if ( bbp_get_spam_status_id() === $_post->post_status ) {
						$this->update_post_history( $post_id, sprintf( esc_html__( 'Post status was changed to %s', 'bbpress' ), $_post->post_status ), 'status-changed-' . $_post->post_status );
					}

				// Abnormal result: error
				} else {
					// Leave a trail so other's know what we did
					update_post_meta( $post_id, '_bbp_akismet_error', time() );
					$this->update_post_history( $post_id, sprintf( esc_html__( 'Akismet was unable to check this post (response: %s), will automatically retry again later.', 'bbpress' ), $this->last_post['bbp_akismet_result'] ), 'check-error' );
				}

				// Record the complete original data as submitted for checking
				if ( isset( $this->last_post['bbp_post_as_submitted'] ) ) {
					update_post_meta( $post_id, '_bbp_akismet_as_submitted', $this->last_post['bbp_post_as_submitted'] );
				}
			}
		}
	}