I have a site with visitors from all over the world, and I'm trying to optimize indexed pages on search engines beside Google (he indexed most of my pages).
I see that on Japan search engines I'm aware of (rakuten & ocnsearch.goo) I have about 15% of my pages indexed. On Baidu & Yahoo & Bing I have only ~0.5% although I've given them sitemaps weeks ago.
How can I make other search engines crawl my site? Is there a list of sites I should submit site maps to? Any tips?