Done properly, people who are already convinced they need your product or service find you and that's 90% of the battle to make the sale. They may not know your product or service or even the type of product or service exists. But they find you anyway. Now all you have to do is convince them that your product or service works.
People who have a particular need or problem interact and network with people with the same needs or problems. This adds the best sales tool of all... word of mouth either directly or via social networking.
Directly contacting social media outlets related to people with special needs is another important aspect of Inbound Marketing.