- Google.com
- Yahoo.com
- Bing.com
- Wolframalpha.com
- Search.Twitter.com
- Oneriot.com
- Wowd.com
- Collecta.com
- Baidu.com
- Yandex.com
Conclusion
All results definitely aren't equal.
- Most engines don't have the same basic layout, but they watch what the competitors are doing and implement some features which seems to make sense to the users (see "Google's New SERP: Hit Or Miss?").
- The universal search type results on Bing and Yahoo are as attractive as Google.
- Are trending topics a natural way to navigate a new breed of search engine? This is a hard question to answer but it looks like that trending topics are of growing importance for the search engines, especially because of mobile devices. Search-centric will be a huge topic in coming years, including voice, language, and geo-local services. SEOs will be quite busy.
- Do Baidu and Yandex have any design edge? Well, let's put it that way: Baidu and Yandex still model themselves on the good "old" Google design but we'll likely see changes from them in the near future.
- Are moving/scrolling elements on the page effective? Yes they are. Users are using them and these elements act like the search button!
