This could be your minimum viable product. This could be what you link to in incubator applications (DreamIt's deadline is July 8!). Don't expect anything too fancy--just a web application that closely matches your basic vision.
Examples of things I can build:
-Integrations with 3rd party APIs (eg Twitter, Facebook etc.)
-Real-time web apps (eg, if a certain person tweets, send a push notification to users)
-An application that sends custom emails
-A/B tests
-A basic search engine, content management system, blog, or social network
-A back-end for a mobile app (not the mobile application itself)
-A Simple Bayes classification system
Be creative!
What I want from you:
-A phone call explaining your vision
-Mockups, sketches and descriptions of your idea
-Any graphics and copy text you want me to include
-Seven days of patience
-$500 (US)
What you get from me:
-A Ruby on Rails web application with a MySQL or Sqlite database
-Very basic design. If you want something pretty, buy a design from themeforest or 99designs and I'll be glad integrate it (No PSDs, just HTML and CSS)
-Hosting on Heroku (free tier only)
-Full ownership of the code (upon completion and full payment)
Leave questions or ideas in the comments below, or feel free to email me: [my HN username]@gmail.com. I hope to get started in the next 1-2 days.