We provide direct linking to Trulia. However, the best way to get your tour distributed is through a direct distribution agreement with Listhub. Most of the major real estate portals like Zillow are only accepting direct feeds from Brokers and Companies. The virtual tour link can come over from the MLS. We automatically convert it to your branded tour for many of these sites. So you can get the lead if a user clicks on the tour.
It is best to get your broker to provide a feed via Listhub to Zillow, Trulia and other sites and include the virtual tour fields in the data push to these sites. Listhub has specific agreements with these companies that require the listing information to be removed within a short time period after the listing has sold. This is the best option to protect you, your seller and the new buyer!