Well, habit is one of the reasons. Yahoo is also useful now, because it doesn't use your search inquiries in order to make money from them
How can you prove relevancy? That is like saying, if it has been proven that Sarah Lee is the best bread then why are people still buying Wonder Bread? It is personal preference. Also, Yahoo and Google are constantly adapting to try and bring more relevant results to the end user. If Yahoo had stayed the same since its inception it definitely would have lost popularity as Ask Jeeves did. I would also argue that Yahoo may be integrated into other sites, as Google is integrated into Mozilla Firefox default home page. Personally, I find it more bothersome that some people are still using Netscape Navigator! I know this because I have received visitors using that browser. Crazy right?
Sometimes I just couldn't find what I want in Google or even Yahoo. How I wish their algorithm focus on titles rather than "more than 300 rules" or something that Google say! About Yahoo I once saw "powered by Bing" does that mean the engine is Bing's. It seems because you get almost the same results with these two search engines.
i still use yahoo because i like yahoo news and its update regularly even i like yahoo messenger also
I don't agree with that, I use both google and yahoo. Google for some things and Yahoo for other, Yahoo has a pretty good sports and finance sections that Google hasn't shown it can compete with, as for search I do use google.
I use both too! For Google, i love their fast search results and of course, GMAIL! The best free email provider ever. I use Yahoo mainly for news and for stuffs i cant find on Google
It all depends upon your needs and the importance you give to a particular subject. If you are used to google then try yahoo at times and you will feel the difference. This works very effectively for the webmasters who need to dominate the SERPs.
Yahoo mail is better than gmail, But it still sucks, it deletes accounts, it is the shittiest poorest thing. (Got my account deleted :'(