You can zoom in using the slider on the left, and click & drag the map to move it around. When you hover over a pin you'll get the name of the place. Click on a pin to see their hours, address, etc. When you hover over a place in the list, it will be highlighted on the map. Gray pins are transportation points, not wifi spots. There is free wifi at the Eugene airport; it's not on the map because it's way out of town.
You can also read or add - about places on the map, new places, possible improvements, etc. also available.
See below for more Eugene maps and other resources.