Spotstart.com is a collection of popular searchable web resources. I had a prelimiary version over a year ago, but just coded it again. If you visit the site on an iPhone, you will see a customized version (http://www.apple.com/webapps/searchtools/spotstart.html). Somehow, I think the iPhone version will be more popular. There is a category for startups which includes Hacker News searched from google.
Please let me know what you guys think. Anything to be added or removed? Thanks.