Although in Japanese, this tool is simple to use and is useful for those interested in researching SEO related information. Enter a search word (keyword) in the field provided and press "Check!". The page you are moved to contains the number of monthly sites accessed with that word included. And it shows the site's search engine rank and the number of accesses for that rank. The results are only for Yahoo! Japan and Google in Japan. Pretty neat tool.

This is a great to tool to know the last time a Google or Yahoo robot crawled your site. Just enter your URL and click the button under it (in Japanese). The code for your widget is generated. Just copy and paste on your site. Generate the Yahoo and Google widgets separately.