800 number call capture is a toll free services feature that has proven itself as a powerful marketing tool across a number of industries. 800 number call capture has been most prominently used in the real estate and mortgage industries to provide companies an excellent, low cost way to cultivate leads and new prospects. It can just as easily be applied to almost any business concept. You have probably already seen this form of marketing in action on "For Sale" signs and display advertising without even knowing it.