This site appears to be a front of google and in the end its relying on google to search and get the result, some how I don't see this to be too different from directly using google in a incognito window
A incognito window doesn't hide your identity from Google. They still get your IP address and your browsers's fingerprint, which is more than enough to identify you.
Then use !s :-)
It's what I do, don't want to use a search engine without the bangs any more.
At this point, I've set up search keywords in firefox to do this. Now, for example, I type "gi rabbit" for pictures of rabbits. It's nice because they also can be used as shortened parts of links. Eg. "@ john" to go to twitter.com/john