It uses the search API (http://www.hnsearch.com/api http://www.hnsearch.com/api) and does a little bit of sanitizing to remove "Show HN" from the title and find

It uses the search API (http://www.hnsearch.com/api http://www.hnsearch.com/api) and does a little bit of sanitizing to remove "Show HN" from the title and find the URL in the post. It seems like the site isn't returning any new results right now, and I'll investigate when I get a chance. Usually things are up there realtime.