Hey Android Geeks, I open-sourced the Hacker News Droid app and the API.
App Download Page: https://market.android.com/details?id=com.glebpopov.hackernews
App Source: https://github.com/glebpopov/Hacker-News-Droid-App
API Source: https://github.com/glebpopov/Hacker-News-Droid-API
Cheers, Gleb