What benefits multiple listing sites really provide?

[Vijay Kurhade]

There are so many listing sites from zillow to trulia to compass to redfin to realtor to houselights to 100s of others.

Most of they have same set of features(property details, neighborhood insights, tax records, property records, recent transaction records, estimates etc..); even many shared customers; then what real advantage they serve for an Buyer/Seller/Agent;  in the end one has to pay for listings and followups on many since we try to list on multiple of them.

Thanks in advance.

All the Best