Why no comment link under blog posts? How to add it?

Thanks Daniel, but I don’t understand what code exactly I’m supposed to paste? This is the part of coding you are referring to:

function pinboard_entry_meta() {
	if( ! pinboard_is_teaser() ) : ?>
		<aside class="entry-meta">
			<?php if( is_category( pinboard_get_option( 'portfolio_cat' ) ) || in_category( pinboard_get_option( 'portfolio_cat' ) ) ) : ?>
				<span class="custom-meta entry-category"><?php the_category( ' / ' ); ?></span>
				<?php $meta_keys = get_post_meta( get_the_ID() ); ?>
				<?php foreach( $meta_keys as $meta => $value ) : ?>
					<?php if( ( '_' != $meta[0] ) && ( 'enclosure' != $meta ) ) : ?>
						<span class="custom-meta"><strong><?php echo $meta; ?>:</strong> <?php echo $value[0]; ?></span>
					<?php endif; ?>
				<?php endforeach; ?>
			<?php else : ?>
				<span class="entry-author-link"><?php the_author_posts_link(); ?></span>
				<?php if( ! is_singular() ) : ?>
					<span class="entry-date"><a href="<?php echo get_permalink(); ?>" rel="bookmark" title="<?php the_title_attribute(); ?>"><?php the_time( get_option( 'date_format' ) ); ?></a></span>
				<?php else : ?>
					<span class="entry-date"><?php the_time( get_option( 'date_format' ) ); ?></span>
				<?php endif; ?>
				<?php if( ! is_attachment() ) : ?>
				<span class="entry-category"><?php the_category( ', ' ); ?></span>
				<?php elseif( wp_attachment_is_image() ) : ?>
					<span class="attachment-size"><a href="<?php echo wp_get_attachment_url(); ?>" title="<?php _e( 'Link to full-size image', 'pinboard' ); ?>"><?php $metadata = wp_get_attachment_metadata(); echo $metadata['width']; ?> &times; <?php echo $metadata['height']; ?></a> <?php _e( 'pixels', 'pinboard' ); ?></span>
				<?php endif; ?>
				<?php edit_post_link( __( 'Edit', 'pinboard' ), '<span class="edit-link">', '</span>' ); ?>
				<?php if( ! is_singular() ) : ?>
					<span class="entry-permalink"><a href="<?php echo get_permalink(); ?>" rel="bookmark" title="<?php the_title_attribute(); ?>">Permalink</a></span>
				<?php endif; ?>
			<?php endif; ?>
			<div class="clear"></div>
		</aside><!-- .entry-meta -->
	<?php endif;
}

I understand I’m supposed to paste something in between, but what exactly and where?

Awesome, thanks! The code mentioned above didn’t work for me, but for others who might be interested, this is what I put in my code and it works like a charm now 🙂

<span class="comments-link"><?php comments_popup_link( __( 'Leave a comment' ), __( '1 Comment' ), __( '% Comments' ) ); ?></span>

Thanks again Daniel!