story
Although there are many apps that let you keep list of things (workflowy, thingist, notational velocity for MAC) it lets you access lists right from search box.
With special syntax (<list name>.<item to add>) you can add items to existing list. Or access existing lists with <list name>. This <list name><dot><item> syntax is optional after first use.
Using it as default search engine is privacy safe and doesn't increase search latency.
Hope you like it. Please leave your feedback.
@Workflowy, Notational Velocity users: Why you won't use this?
@Vimperator Users: Would you like to access something like vimperator from search box? It won't need plugin install.