Shameless plug: here's my (free) Hacker News app for Android. I've tried my hardest to make it sexy. https://market.android.com/details?id=com.airlocksoftware.ha...

Yeah, it is so hard to edit and type from Android. The best times to read and comment are when I would be unproductive like riding a metro or train or sitting at an airport, but it is so hard to type and edit.