I think that I have been a local guide since the last 3-4 years and I accidentally discovered this feature. This is one along with reading that I am doing it on a continuous basis.
I get a deep satisfaction and a sense of achievement when my photos or reviews get a lot of likes or views. I have also contributed to the growth of very few deserving businesses for which there were no photos or reviews posted. And I also see this as giving back to my society. Ultimately, we are all humans and we have to help each other out in some form or other.