The idea of ​​"bangs" I feel very good, since there are many sites that people use intensively for certain tasks, and centralize the searches that concern them in the DDG, delegating the task to the internal search of the site is a clean solution .

I think this type of search works better than the solution by site restriction on google "XXXX site: YYYY.com" which depends on the ability of the "crawler" to crawl the entire site, but is the site himself the more interested agent in publicing their content through a good search engine.

Moreover, the solution "google" is more general, does not depend on mnemonics and is applicable to any site without human intervention.

Providing millions of results is not the solution to the problem of finding information. The problem is to provide a dozen of them ... But well chosen. The bangs are a form of valuing the experience of people in relation to some websites that accept as reference.

Paradoxes ... Translated by Google Translator... :)