No Longer Lonely : Online Social Community for Adults with MentalIllness
This is a connections site for those with mental illness and health issues. While it is also a dating site I have met several friends and penpals.
A word about any connections site; for friends or relationships otherwise. Such sites tend to attract those seeking to take advantage of the lonely and vulnerable. Always be vigilant.
There are also sites out there that allow people of similar interests to gather and communicate. For example I belong to a creative writing website.
Please also keep in mind that you need to differentiate between online personalities and real life relationships.