How to control the number of posts in label pages

Blogger defaults to 20 posts per page in label pages
Here's what you need to do to increase the number of posts. Download your template, save a backup copy and use your editor to replace all occurances of
data:label.url
with
data:label.url + "?max-results=100"


Update: If you are using label clouds and you want to set max-results, replace this line in Phydeaux3's code
a.href = lcBlogURL+'/search/label/'+encodeURIComponent(t);
with this.
a.href = lcBlogURL+'/search/label/'+encodeURIComponent(t) +'?max-results=100';