Hacker News
- Where the Startups Are, By Zip Code http://www.readwriteweb.com/start/2010/08/where-the-startups-are-by-zip.php 11 comments
- TwitZip: The startup that created Twitter accounts for nearly all U.S. ZIP Codes http://www.siliconprairienews.com/2010/08/twitzip-delivers-hyperlocal-news-via-twitter 3 comments