A free Heroku setup survived the front page of HN? Cool. Makes it all the more unacceptable when sites do go down under the traffic. Especially when they're just blog posts.
We once had 2 links on HN front page for http://backspac.es for the better part of a day -- although neither made it to number one spot -- running only 1 dyno. Something like 18K uniques.
Also had two techcrunch posts about something I made (http://venturecrapital.us) running on a single micro ec2. tornado + nginx + mongodb and proper indexes go a long way. Similar traffic.
