[shanty]

This is all well and good for information retrieval, but people are making decisions based on information from search results.

In your vegetarian example, what if 51% of people were vegetarian in an area, and the general population was making decisions off these "localized" search results. We would likely expect that this would influence the minority to the tastes of the majority.

This might be fine for something like vegetarianism, but what about other topics? Should your search results be more racist because you live around a lot of racists? This is best case.

I have tangentially worked with groups that specifically utilize this to provide public opinion sway and consumer capture for their clients.