the major problem with this is that they ignore the fact that the ocean and the ice covered lands are on top of a sea of magma. right now the weight of the ice is pushing down on the land which pushes the magma from underneath the land to underneath the sea. as the ice melts, the land gets lighter and the sea gets heavier. that will push the magma from under the sea to under the land and push the land up.
the result is that the sea will get deeper, the sea lvl to the areas of ice covered lands will actually drop and probably rise a fraction of the predicted.
the thing is that it has happened before. even if it does rise the entire 6 meters, is it really going to have that great effect on anything. in America a few rich people will lose some of their wealth. in places like India where a lot of people live next to the sea, they will move inland. its not like its going to happen overnight. the amount of land that will be lose will not be that great. in fact most of it will be land that was created by rivers dumping their sediments into marshes which, once they are underwater will once again begin to grow from the sediments.
as far as Mount Kilimanjaro's glacers are concerned, dig a little and youll find evidence of their appearing and disappearing mulitple times in the last million year. when the area dries out, the glacers disappear, when they get wetter, they reappear. that areas has had many times of major drought in the past
