Web Search : Twitter + Google + WolframAlpha
Image Search: Flickr + Google Images
Videos : YouTube and many other video hosts
The homepage is simple. The search results page is almost similar to that of Google's. But, the fact that it provides a mashup from many sites is very different and very effective. Instead, of visiting different search engines for the results of a particular query, we now have all in a single website thus reducing our valuable time. The search is powered by Google. I give it a High 5!!!
Visit Heapr.