The question of using Thumbtack as a platform for referring business to other pros has been broached before -- there was a post asking about how to hire other pros as a pro directly. More generally speaking, a referral option could be really useful. This can be more than simply a version of customers' mechanism of looking for pros. Rather, a search tool, with useful category- and text-search features, which allows a pro to send inquiries to other pros, and converse with them, could be very useful. I think as well that while Thumbtack can use such a tool as an opportunity to collect fees from referees, it does not have to (or perhaps can charge a very small fee). Ultimately, the pro hired by a customer directly already pays the cost of a lead, and this can account for any referral the pro can provide. Such a tool can enhance the flexibility of a business and can allow pros to take on more business, and lead to an increase in the platform's revenue as well. I am looking for potential referrals right now. I certainly don't wish these pros to pay fees for my lead, as this would be a networking inquiry that has no guaranteed result as of this time.