What are the main differences between Google, Yahoo and MSN / Windows Live Search (Microsoft)? It's a common question, and one that only a handful of SEO experts can easily answer.
The main differences seem to be that Yahoo is over concerned with page-age (including the age of your page, and the age of the pages which link to your page), whereas Google is more interested in the age of actual links. Meanwhile, Microsoft's web search engine is extremely instable and overrun by spam.
