How To Use Google Earth Street View to Research Properties Remotely.
If you're looking at buying vacant land, the properties next door can have some MAJOR implications for the value and "sale-ability" of your property (e.g. -- Would you prefer to live next to Glacier National Park or a Meth Lab?). Most people care a great deal about who their neighbors are, so get a good idea for what the surrounding properties look like, and what this will mean for the desirability of your property.
If the adjoining properties have any serious obvious issues that are beyond your control, you'll want to think carefully what this means for this property's value. For a quick tutorial on how to see what the adjoining properties look like next to the parcel you're researching, this video explains how I do it.