I wrote a scrappy script to process your report and find the "best" domains to consistently get "first post" on by multiplying total submissions by average points received per submission (i.e. total karma benefit). I'll ignore any sites that got fewer than 300 submissions. Result:<p><pre><code>  techcrunch.com       - 22229
  nytimes.com          - 10178
  readwriteweb.com     - 2482
  thestandard.com      - 1888
  centernetworks.com   - 1510
  technologizer.com    - 1470
  alleyinsider.com     - 1158
  sfgate.com           - 1081
  treehugger.com       - 708
  itworld.com          - 698
  devcentral.f5.com    - 658
  markevanstech.com    - 523
  howtoforge.com       - 487
  news.com.com         - 431
</code></pre>
TechCrunch is by far in the lead. But why not? They publish good stuff (usually) that HN readers like to vote up. Same for all the others in the list too.