Nice work :-) may end up using this. I noticed that you rolled your own hacker news parsing - any reason why you used this over http://www.hnsearch.com/api or similar?
On another note (and sorry for advertising my own project) but it is relevant and some may find it useful - Hacker News for Sublime Text: https://github.com/dotty/HackerNews-SublimeTextPlugin
By the way, you might want to consider putting "Show HN: ..." in the title. Tends to stand out more and people often look for these posts.