While there is manual way to check and Google around if a specific website or blog in indexed by Google or not, here is more simpler way by using IndexedByGoogle.com – Just type your blog or website URL and hit the GO button. You will get the answer as YES or NO.
It also shows the time and date information of last indexed information with Google. You can also click through indexed page URL to see what Google cache holds for your website. Besides, you can check for blog URL with and without www and even single page posts for indexed status. Bookmarklet is also available for quick check of any URL. Get the answer for, Is my website indexed by Google – very neat!