As protestors fill Egypt in rare public demonstrations against President Hosni Mubarak, Twitter has been blocked, according to reports.

TWITTER IS BLOCKED IN EGYPT

According to TechCrunch, third party servers are still being used to tweet within the country, many using the #Jan25 hashtag.

As Foreign Policy is reporting, Facebook is still being used to help organize and broadcast the protests as well, largely on the page "We Are All Khaled Said." Says FP:

This year, the protesters, inspired by events in Tunisia and outraged by the death last year of Khalid Said, a young man brutally tortured and killed by police in Alexandria, organized themselves on Facebook and called for a "day of anger" across the country.

This is a developing story. Check back for updates, and follow live updates on the protests here.