The ranks of protesters have swelled since Egyptian officials released Google executive Wael Ghonim from state custody on Monday.
Ghonim went missing on the third day of protests on January 27th.
That's when plainclothes security officers blindfolded him and took him to state security offices.
Yesterday, Ghonim addressed a massive crowd of protesters from Cairo's main square.
He told demonstrators, quote, "We will not abandon our demand, and that is the departure of the regime."
Many of the anti-government protesters have begun to regard Ghonim as a leader of the Egyptian uprising.
Ghonim's Facebook page entitled "We are all Khaled Said" has been credited with helping to spark the protests.
Ghonim created the page in response to last summer's beating death of 28-year-old Said by Egyptian police.
(Copyright 2011 by VERTEXNews/Newsroom Solutions)