This is a good site. Like any search engine caution is advised but not because Yahoo isn't the one to trust. It's the stuff that might come up in the search. Never a problem here, & always nice to have an alternative to just Google all the time.
1. Informative and Useful.
2. Easy on the eyes.
3. Well developed search engine: good mail service, thorough search with administrative/parental tools.
4. Puts up a fight with sister Google and rival AOL.