JakePT

<?php
/**
 * A copy of WordPress' sanitize_file_name function that doesn't replace 
 * spaces with dashes. Use on the sanitize_file_name filter to stop WordPress
 * replacing filenames with dashes.
 *
 * ...Or don't. It's probably a bad idea.
 *
 * @param string $sanitized_filename The previously sanitized filename.
 * @param string $filename The original unsanitized filename.

JakePT

<?php
// List of links for up to 10 of the most used categories in the last month.
$top_terms = prefix_get_top_terms( 'category' );
echo '<ul>';
foreach ( $top_terms as $top_term ) {
    echo '<li><a href="' . get_term_link( $top_term ) . '">' . $top_term->name . '</a>';
}
echo '</ul>';

// List of links for up to 5 of the most used tags in the last 15 days.