| http://www.w3.org/ns/prov#value | - Two of the biggest factors are visibility and word-of-mouth, according to Gillingham. ???If my neighbor installs a solar panel and tells me he???s saving money and he???s really excited about it, it???s likely I???ll go ahead and do the same thing,??? he said. ???Then there are others who???ll install because they don???t want to be one-upped by their neighbors.???
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