MichaelH

Consider downloading and installing Otto’s PHP Code Widget, then something like this code in one of those widgets:

<?php if (function_exists('wpp_get_mostpopular')) wpp_get_mostpopular(); ?>

Please paste all the code from the theme template file (probably category.php) that is displaying those posts into a pastebin such as wordpress.pastebin.com, and report the link back here. Maybe someone can spot your problem. Thanks.

Use the template tag, wp_list_authors().

<?php
wp_list_authors();
?>

Without a plugin you’d have to write custom code to do those things.

Didn’t really test this but using example from http://wordpress.org/support/topic/dropdown-list-of-posts-in-a-category?replies=4

<?php
$cat_id = get_cat_ID('uncategorized');
$args=array(
  'cat' => $cat_id,
  'post_type' => 'post',
  'post_status' => 'publish',
  'posts_per_page' => -1,
  'caller_get_posts'=> 1
);
$my_query = null;
$my_query = new WP_Query($args);
if( $my_query->have_posts() ) {
?>
<form name="jump">
<select name="menu">
<?php
  while ($my_query->have_posts()) : $my_query->the_post(); ?>
    <option value="<?php the_permalink() ?>"><?php the_title(); ?></option>
    <?php

  endwhile;
}
?>
</select>
<input type="button" onClick="location=document.jump.menu.options[document.jump.menu.selectedIndex].value;" value="Go">
</form>

<?php
wp_reset_query();  // Restore global post data stomped by the_post().
?>

Otto’s PHP Code Widget

How about:
http://codex.wordpress.org/Function_Reference/get_terms

http://www.google.com/search?q=wamp+using+email