Privacy and the internet is a hot topic, especially in regards to search engines. There are, however, a few alternatives available that can be used for more privacy in searching or as an all around replacement for your current home page.
DuckDuckGo results are higher quality as they filter out much of the garbage and spam on the internet.
Start Page (aka ixquick) is an awesome search engine that goes to extreme measures to retain your privacy. Full proxy protection is also available with a click (no need for ctunnel, vtunnel, etc). Start Page is also unique in that the searches are powered by Google, so your results are an actual Google search which submitted on your behalf anonymously.
What happened to Scroogle?
Scroogle was a service that submitted results anonymously to Google that went down in smoke in quite a bit of drama.