“Because of differences in the density and temperature of ice and sea water, the net effect is to increase sea level by 2.6% of this volume, equivalent to 49 micrometers per year spread across the global oceans.”
http://www.leeds.ac.uk/news/article/793/melting_icebergs_causing_sea_level_rise
Even assuming there is no flaw in their data or reasoning, that's half a millimeter. Somehow I don't think that will make much of a difference in my life (or a polar bear's life for that matter), unless leftists are able to use it as an excuse to destroy capitalism.