Does the G-8 Summit ever get anything done?

There seems to be always talks about new initiatives and progressive policies...but never any actions taken by these world leaders at the actual conference.

If this means anything, a recent draft of the Group of 8 agreement said emissions should be reduced “to limit the average increase in global temperature to 2 degrees Celsius above preindustrial levels.” The final version said the nations “recognize the broad scientific view” that it should not rise more than 2 degrees Celsius.

This seems rather vague -- Should countries now execute and operate on a basis of whether they "hold the global temperatures below 2 degrees?”I have yet to read an article that states how a country would even measure this proposed standard.