Nope, which is kind of odd considering that I live in a major metropolitan area with tens of thousands of JWs. Go figure.
I did learn about this site from an ex-JW I know and I've told a couple of former members about it, but I have not discovered that I previously knew anyone that posts on here from their posts or they mine.
On the other hand, I have made several important friendships here with people that live all over the world. We email, text and talk offline. A couple I have even met personally. These few friendships have become very important to my growth and healing after leaving the cult.