Yes, it's a relatively silly quibble, but that second or two more of loading feels pretty significant.
> there is no stupid auto-complete
That's really something I don't care about, since I never search directly from the site, always from my browser.
One of my biggest gripes is probably that it will only display one result per domain unless you restrict a search solely to that domain. And it often shows not the most relevant or logical result for a query for a website. I should make notes on that and send them in.
Since it mostly uses Y!S's results, which tend to suck compared to google's (for my searches anyway), I'm not sure it can improve much in that area, which is by far the one that pains me the most.
And if I'm going to use google 9 times out of 10, I can just remove the indirection.
0-click info and search ideas are really nice features. Another useful hashbang I use a lot is !a which searches amazon directly.
You say what you want, I say what I did.
> They can afford to be more liberal about banning spammy sites, which helps a lot.
It's cool, but I've not seen it helping much so far, since the base results suck ridding them of some of the crap don't improve them noticeably.
> 0-click info and search ideas are really nice features.
They're nice features when they display information I want. They generally don't.
> Another useful hashbang I use a lot is !a which searches amazon directly.
No. Just no. Firefox has been able to do that since 0.9 if not earlier, I'm sure other web browsers can handle that as well. I have no need whatsoever for the indirection through DDG. Here's how I search amazon: focus address bar, type "a somethingsomething", return.
What really makes DuckDuckGo so great is the bang syntax. Searching for '!foo bar' will automatically redirect you to another search engine for your search (e.g. '!cpan mechanize'). Here are a few I use frequently: !google - Google !images - Google Images !cpan - Perl CPAN !perldoc - The Perldocs
Duck Duck Go makes it so easy to search everything.
One observation is that the Duck is great for English language / international searches but not for other languages (such as Dutch) searches.
I have switched inside the Google Chrome bar and am able to access image searches by adding a "!images" inside the search or Google with a !g. Very little inconvenience there.