Hello I've faced a new problem with my websites. All of my websites has been DE-indexed by Google. It showing that my websites has been crawled by Google, but not cached and indexed. Whereas on Yahoo and Bing my websites are indexed. Can anyone please help me out...why Google has DE-indexed my websites?
I'm not completely sure why they've been de-indexed unless you've used any black hat SEO, although getting them indexed again should be pretty easy. Use a pinging tool such as 'Massive URL Pinger' I use it on a weekly basis because our works website is constantly being updated and the META description needs to be indexed ASAP. Also building some good links will also get your website indexed quickly.
I think your site is penalized by the google, it is happened in case of duplicate content or un-natural link building of your site. Stop creating link for sometime it will help you.
Check your website via any penalty checker tool. If your website make penalty through search engine. Remove penalty and crawl again your website.
Could you tell us more about what you have done with your sites in terms of backlinking? Also, is all content unique?