My website suddenly stopped indexing

[cecilio]

I am not sure what happened, for few days google has stopped indexng my site content. Earlier any post in my site used to be n google index within 2 hours but now I do not see the posts in google index.

I am using WP SEO by yoast plugin. Can some one please guide me as to what might be causing the issue?

[davidweb09]

Submit your website to Webmaster tools to start indexing again on regular basis.

[annapham]

So many bloggers having this issue..Maybe a technical problem...Even Blogger forum and help in twitter also not responding regarding this issue..