Again, the search engine is purely amazing. It's bullet proof, and holds a 60 calibar chain saw gun that pierces through other search engines such as the epic failed bing.com .
Though, it searches anything that is "similar", so best to install WOT on every browser, so you won't click in the virus site!
Reliability is excellent, privacy is excellent, Trustworthiness is good since all kinds of websites are out there and google is only a search engine. It finds all sites using your key search word(s), and child safety is satisfactory since it doesn't protect from sites that can be harmful.