Most of the proptech companies coming out of Silicon Valley plan to make money by eliminating Realtors and taking their cut. But is that really what buyers want? The latest trends in e-commerce point to social buying and market networks, where trusted friends or influencers guide purchases rather than star ratings by strangers. The real estate market invented social buying, with Realtors being the original influencers. Most proptech companies are trying to move us away from social selling while other industries are waking up to its power. A Silicon Valley veteran talks about which trends will likely impact global real estate sales and why. Who is working for realtors, and who wants to get rid of them? Is there a model for future home sales that puts realtors, rather than homes, at the center of the online shopping experience?