What's the Difference Between Full.com and Their Competitors?

Mortgage.com is one of the most popular sites for finding a new home, but it's not clear how much money they're making from their 80 20 investor program. The site has an easy-to-use mortgage search feature that can be frustrating to use if you just want to see what rates are or something. They don't capture emails aggressively enough and have a weak opt in option on their email list.