I don't know if I'll ever use duckduckgo, but I love the marketing approach: instead of advertising, create side projects or content that interest people. I find the blog content very interesting.
Really it just popped in my head one day and I just liked it. It is certainly influenced/derived from Duck Duck Goose, but other than that there is no relation, e.g. a metaphor.
I've never heard of duckduckgo.com, but I have to say I like it! Its less cluttered, and I like the way it asks to clarify what I'm looking for before returning results.
I'm sorry you didn't have a good experience with our toolbar. The false positive rate is actually very low, but there is a subset of sites (new launches) where we still have some problems. Basically there is a time lag in our crawling. Unfortunately, this effects the HN (startup) crowd more than others.
A lot of people want to avoid parked domains and ads, hence the popularity of noscript. You do not appear to be one of these people :). So it probably wasn't for you in the first place.