What features would you like in a search engine?

nicolas.slusarenko writes: Nowadays, there is one dominant search engine in the world among few alternatives. I have the impression that the majority of users think that it is the best possible service that could be made. I am sure that we could have a better search engine. During my spare time I been developing Trokam, an online search engine. I am building this service with the features that I would like to find in a service: respectful of user rights, ads-free, build upon open source software and with auditable results. Well, those are mine. What features would you like in a search engine?