In 2004, after years of brushing up against the harsh realities of the dating scene, Leftwich founded No Longer Lonely, a dating site that caters to the mentally ill.
Love for less Niche sites are also a lot less expensive.
Prescription 4 Love, which started charging in May 2009, is $9.95 per month, while most of the features on No Longer Lonely (including the dating service and chat rooms) are still free.
For that fee, members get a more personalized experience, as Date Able is more akin to an old-school matchmaking service.
The organization has been responsible for almost 1,000 marriages, according to Watson.
Ricky Durham founded Prescription 4 Love in 2006, inspired by his late brother Keith, who lived with Crohn's disease for 15 years before passing away in 2004. Though he doesn't find it appropriate to be a member of a community he founded, he says he can empathize with his members.
"He was a good-looking boy, and he could find dates, but when do you tell someone you have a colostomy bag? "It's nice to find someone who's going through what you're going through," he says.
"People with disabilities, especially developmental disabilities, are typically behind the eight ball because they haven't had the practice of dating in college or their young adult life," says Watson.
"Many of them never had the puppy love, been broken up with, experienced the fights, or the good stuff." To make up for this lost time, his best bit of advice is to be totally honest.
In addition to providing their users with a more hospitable environment, these websites defuse the tension over how and when to disclose an illness, which is often an issue for people with diseases and disabilities who venture onto mainstream dating sites.
When health problems equal heartache After some "horrible" results on other dating websites, Lana joined Prescription 4 Love and the STD-specific site
"If you're mentally ill, it's kind of a hostile world out there.