Turn the "Seeking feedback on my startup" into a premium service. Startups submit their site and mini-pitch/boilerplate. Users go visit the site but the site could be framed with a dinky toolbar at the top that is used for usability/feedback review. Mocking up their website, writing notes, giving feedback, etc. All that data is aggregated into a nice dashboard that the startup can review. They could even filter by a users karma to ween out the crap if someone isnt giving constructive criticism. They could also vote on who gives them the best feedback, which would add to that users karma (redeemable for prizes or services from other startups).<p>So, the startup pays some amount, lets say, $500 for the feedback service. HN guarantees that they will receive 100 pieces of feedback using this tool (which of course would be using node.js, closure, haskel, [insert any trending technology here]). Once the 100 pieces of feedback are received, the 'sponsored link' gets removed and another goes in its place. The startup could also request feedback only from users with certain karma levels (which would cost more money).<p>HN shows a maximum of 1 sponsored review link at the top of the site, or mixed in somewhere, at a time. I dont think it would be too tough to get 100 feedback notes in a single day (with 60k users that love checking out new startups).<p>Let's say only one is shown each day, thats $15,000 per month in revenue for that service. That'll buy a lot of ramen.