As a geologist, I use ESRI services quite often cause they provide many useful tools related to cartography. GIS technology continues to play an important role in the study of the earth. Through GIS, geologists have been able to identify and figure out the puzzle that is the earth surface. Some of the sections where ESRI's tools are useful are mapping, urban planning, land information system, surveying, detection of coal mine fires, coastal management, land use changes, land administration and worldwide earthquake information system. Review collected by and hosted on G2.com.