I have two currrent penfriends. One of them I write proper letters to (and post them) - I used to work with her eons ago, when I was working in London. Oh lost count of the years we've been writing. The other is a lady in Auckland New Zealand, I have been writing to her for many years (but not quite as long as the first p.f.), we used to write "real" letters, but now e.mail each other regularly. I saw a letter from her in, I think, the Sainsbury magazine, asking for a penfriend in the UK. I wrote back to the mag, and she chose me to correspond with.
Oh actually, there are more. We are still in touch, by e.mail with a young Portuguese girl who we first got to know when she stayed at our house as a student, we're still in regular touch with her (by e.mail). And we also keep in regular touch with a Germany guy, who again stayed at our home as a student, but now works for a discount supermarket chain in Europe and Asia.
I have also recently got back in touch with a girl who I used to play with when we were schoolgirls. At that time, she lived around the corner from my aunt and uncle, but she has now moved to Northampton. We got back in touch quite recently, although we did know that some of her first cousins are related by marriage to some of my first cousins.