Sentimnt is Your Social and Personal Search Engine. It remembers what you’ve read and seen on the net and will help you to find it the next time.

TinEye is a reverse image search engine. You can submit an image to TinEye to find out where it came from, how it is being used, if modified versions of the image exist, or to find higher resolution versions. TinEye is the first image search engine on the web to use image identification technology rather than keywords, metadata or watermarks.

Nơi tìm kiếm icon bạn cần

So sánh kết quả giữa Google, Bing và Yahoo. Chọn kết quả bạn nghĩ đúng nhất, sau đó Blind Search sẽ cho biết đó là kết quả do search engine nào trả về.