That's one of the things I tried but there was no StartPage to choose, only Google, Bing, Yahoo and DuckDuckGo (whatever that is). Interestingly, it's the same in my Safari - those four choices but no StartPage.
DuckDuckGo is a Startpage competitor. It works exactly the same way Startpage does: it strips out all user identifiable information, then searches Google and returns "clean" (non-trackable/non-customized) results.
DuckDuckGo is actually somewhat more private than Startpage. Startpage is officially a Google partner, so it is not 100% clean; some user identifiable information (specifically, your IP address) is sent to Google.
DuckDuckGo (Wikipedia)IxQuick/Startpage (Wikipedia)
