diff --git a/poaster.rb b/poaster.rb
index 0045cb1..c7adef6 100644
--- a/poaster.rb
+++ b/poaster.rb
@@ -37,10 +37,9 @@ ensure_dir_exists(post_directory)
 
 # Create post string
 post = %(---\n)
-post_id = ''
+post_id = Time.new.strftime('%Y-%m-%d_%H:%M')
 frontmatter.each_with_index do |item, i|
   post += %(#{item.keys[0]}: #{item[item.keys[0]]})
-  post_id += %(#{item[item.keys[0]].chomp}#{i == frontmatter.length - 1 ? '' : '_'})
 end
 post += %(---\n#{post_content})