Is Yahoo a better search engine than Google?
blogs.law.harvard.edu
blogs.law.harvard.edu
Google leads now by branding. The gap between the major search engines has narrowed to indistinguishability.
Google really got its edge being the default on many browsers. Every time I use a new box or a new browser installation its a long time (months) before i change to Y! search.
But... unless the competitor is significantly superior, why switch? So Google just needs to be good enough such that no one is significantly superior in a way that makes a difference to users. If you're technically better, but it doesn't really help anyone, it doesn't harm Google.
What it lacks is a colorful row of o's.
Once you're past the point of "good enough", search is all about brand recognition. http://foohack.com/2008/06/hacking-the-google-favicon/
A good measure of quality can be found in your own webserver logs. In my experience with mass-market sites, page-views-per-user from Google traffic is much higher, indicating that they do a better job of matching user intent with content. Googlebot tends to be much faster and smarter than Slurp and it's fairly easy to get good ranking on long-tail stuff in Yahoo.
A caveat: the userbase of Yahoo versus Google is different in character, so that may account for the difference in behavior. For whatever reason the Yahoo traffic tends to be celebrity gossip-type stuff and basic noun searches.
Yahoo!'s search was not one of the best sets of numbers I've seen. Google consistently came out on top. Particularly for longer queries, Google is notoriously good at these by comparison to other keyword search engines.
But it might be that was for our dataset bias. You can get surprising boosts in relevance for specific datasets by biasing towards them in your index and ranking algorithms.
What perplexes me about Yahoo is that they haven't replicated some relatively simple things that would make Yahoo a drop-in replacement for Google. Why no full calculator with unit conversions? Why no 'define:' operator?
They've invested so much in the big hard problem of web-wide search; can't they throw a few person-months at filling some gaping holes at the periphery? I'm sure I'm not the only person for whom these gaps disqualify Yahoo from my default setting.