Help make a better long-term search engine with instant answers that are better than links.
Hack on things that you know and care about
to improve search results for your community.
Use open data and APIs, including your own,
to present the best information to searchers.
DuckDuckHack is a great way to get started in open-source since the plugins are independent (you won't step on anyone's toes), offer varying degrees of difficulty, and use different types of data sources and programming languages.