More than an alternative, an improvement. Rated 5 out of 5 stars

As others here I consider this search engine as a most valuable alternative to other engines which for some have become totally bloated. No longer an alternative, DuckDuckGo is from now on my default search engine. It is brilliant, lacks nothing, offers more, including absolute privacy, with or without cookie (for settings). Definitely a must, IMO.

This review is for a previous version of the add-on (20110219).