How do I link to a page containing all links in a link category?

You could create some custom page templates and add something like:

<ul class="linklist">
<?php wp_list_bookmarks('category_name=Quicklinks&title_li=&categorize=0&show_description=1&orderby=name&between=<br />'); ?>
</ul>

with a different link category name in each template.

Or, if you replicated the link category name in the page title, you might be able to get away with a single custom page template and use:

<ul class="linklist">
<?php wp_list_bookmarks('category_name='.the_title('','',false).'&title_li=&categorize=0&show_description=1&orderby=name&between=<br />'); ?>
</ul>

Yeah, if I can’t figure out how to link to links, that’s what I’ll probably do (custom page template).

If I use a page, I can also provide a nice formatted description of the link category. I can attach the links category to the page using a custom field (e.g. attach_links_category) that would allow me to add one or more link categories.

Custom fields was going be my third suggestion but wasn’t sure if that was pushing it a bit. ?? It would be my personal preference.

I decided to do it with a shortcode instead so that we could more easily organize the links. Here’s the code you would put in your functions.php file:

// Linkfarm displays a list of links from a particular category
function linkfarm_func($atts){
	extract(shortcode_atts(array(
			'category' => '',
			'show_description' => true,
			'orderby' => 'name'), $atts));

	$out = 	wp_list_bookmarks(array(
			'show_images' => false, 'show_description' => $show_description,
			'show_name' => true,
			'category_name' => $category,
			'orderby' => $orderby, 'order' => 'ASC',
			'title_li' => 'Related Links',
			'echo' => false
		));	

	/* provide a link to edit the link category, so as to be friendly */

	if (is_user_logged_in() && $category){ // add an 'edit' link to the widget header
		global $userdata;
		if ( ! isset($userdata) ) $userdata = get_currentuserinfo();
		if ($userdata->user_level > 4){ // they are editors or admins
			$edit_link =  "<a class='post-edit-link' href='" . get_bloginfo('url') . "/wp-admin/link-manager.php?cat_id=$category'>Edit</a>";
			$out = $edit_link . $out;
		}
	}

	return $out;

}

add_shortcode('linkfarm', 'linkfarm_func');

The shortcode itself appears in the post like so:

[linkfarm category="QuickLinks"]

But it would still be cool if there was a links page in WP, without having to jump through these hoops.