This day will be remembered in history as the day the people prevailed over the government. When the people of Egypt demanded that Mubarak relinquish his office, he initially refused. He attempted to convince the people that the government rules the people and that they must listen to him, not the other way around. When that didn't work, Mubarak resorted to threats. But the people of Egypt stood fast and refused to leave until he stepped down. Finally today, February 11, 2011, Mubarak gave in and complied with the people's demands to step down.
What will happen now is anybody's guess. The end result will not necessarily be good. It won't necessarily be bad. That remains to be seen. But regardless of where Egypt goes now, today is a good thing, because the will of the people prevailed. A regime cannot be allowed to ignore the demands of the people of its country. No matter how bad things may get if Egypt takes an unfortunate direction from here, it will not be as bad as it could have been, had they allowed their government to ignore them.