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Yahoo! Japan Algorithm Change on 9/14
- October 22, 2009 3:26 PM
- SEO
Yahoo! Japan changed its algorithm in September 14th, 2009. The last updated was about 4 months ago.
MarketZine, a net market web zine published a SEO study report on the changes made using data from May (before the changes were made), and from September (after the change).
Using 10 keywords and some known SEO tactics as measuring tools, they compared ranking changes of the sites placed 1~100 in May.
Excerpts:
Having more informative contents on a page is a good practice.
Domain age is back on the evaluation metrics.
Links from influential sites are valued highly.
Earning more links is a good practice.
Evaluation from the registered Yahoo! category is influential.
Relevance of the linked sites is valued highly.
Get links from different IP addresses.
On the other hand, titles, meta tags and Yahoo Category Registration have less effect on the rankings now.
They have a good charts on the original report.