Today’s Incident of Facebook not opening in India made one thing clear: You cannot rely on default DNS of your ISP. Following ISPs were observed to block Facebook:

MTNL
BSNL
Tikona
Reliance
Airtel

Earlier, Indian Govt had requested Facebook and Google to screen the content. This time, No Public statement was released, but it was observed nationwide, but yes things were back to normal in a couple of hours!…

[Update: 12th June, 2012 9.31PM IST] …The URL https://www.google.com/webmasters/tools/submit-url/ seems to be working fine. Google has fixed it after all.
Today, I was trying to submit a URL to Google. As usual i simply opened Google and searched for “add url to google” , Google returned me the following results.