Hacker News Reader

This is good, but not nearly as good as manually setting single character "keywords" for common searches.

use the search enough times and you can use single character+ <tab>

Works well until you want to distinguish between searching en.wikipedia.org and en.wiktionary.org.

(While writing this I realized I didn't actually remember the exact domain Wikipedia and Wiktionary used... so I ran a "test" search on both.)