Thanks for the feedback and the link! To answer your questions:
1) &quot;I wonder what does it mean by &quot;customizable&quot;&quot;
You can add different plugins (that produce answers) and control when to activate them. You can also create mini-search engines that search specific domains. There are also a few settings about security that you can tweak.
2) &quot;how is this different from DuckDuckGo with its duck.co&quot;
This search engine also includes a feed reader and get results from your feeds when you search. Also, the plugin system allows you to add data and plugins (written in 100% Javascript) instantly without anyone&#x27;s approval.
3) &quot;Why I should register for an account?&quot; 
Since this includes a feed reader, you need to create an account to save your chosen feeds. Also by creating an account you can create your own mini-search engines and add plugins other than the default.<p>Since you&#x27;ve asked these questions, it&#x27;s clear to me that I haven&#x27;t done a good job explaining these things on my site. I&#x27;ll be working on improving this. Thanks a lot for the feedback!