To configure the way the post's categories display, open the index.php file and find the line <div class meta>. There you will see the following code:

<?php the_category() ?>

Inside of the parentheses ( ) and quote marks, add or change this to reflect the new look you desire.

If you would like to have commas between the categories, the tag should read:

<?php the_category(',') ?>

If you would like to have an arrow, the tag would look like this:

<?php the_category(' > ') ?>

If you would like to have a bullet, the tag would look like this:

<?php the_category(' &bull; ') ?>

If you would like the "pipe" ( | ) between the categories, the tag would look like this:

<?php the_category(' | ') ?>

Use your imagination and creativity to make the separations in the categories look any way you like.

Why are all the comments being moderated?

Go to the Options > Discussion panel and make sure that An administrator must approve the comment (regardless of any matches below) is unchecked. With that option selected, all comments are sent to the moderation queue to await approval. Make sure that Hold a comment in the queue if it contains more than x links is not blank and contains a number higher than zero. If this value is blank or zero, all comments containing links will be moderated. If the option mentioned above is unchecked, the link moderation value is higher than zero, and you still have this problem, your Spam Words list probably has blank lines, punctuation marks, or single letters between the information in the list. There should be spaces between the listed items or each item must be on its own line. If you have done this, then upgrade the comment spam plugins you have installed. If this continues to be a problem, deactivate the comment spam plugins one by one to determine the culprit and contact the plugin author for help.