Many people think that SEO means optimizing the search results only for Goolge. Since Google is not the only search engine in the world of Internet, optimizing the results for the other search engines means even more traffic. Today I checked how the Justin Bieber SEO experiment stands in the Yahoo results. Search in quotes for "justin bieber seo blog" did not bring any results from this blog, meaning that Yahoo did not crawl it yet. Strangely enough the article on Flixya is first in the results, as seen by the picture below:
There are so many materials about SEO for Google, that it is much hard to find proper information for Yahoo SEO. In my case I did not rank well in Yahoo and the Flixya website ranks better for exact keywords match. The conclusion - I shall test more Yahoo SEO, even if it does not bring as much traffic as Google.