There is one DISer I hear from occasionally. Her daughter is a student in the department where I just started my new job, but she and I have corresponded since her daughter started considering our school.
There is also a DISer that has become one of my very best friends. I "met" her online in 2004 when planning a WDW trip; she was selling spots in her Illuminations Cruise boat. We were both raised in the same area of Massachusetts, even though neither of us lived there anymore. Her degrees are in molecular biology but she was working in food science; my degrees are in food science but I was working in molecular biology. She has 2 daughters, one just a year older than mine and the other is 6 years younger. Anyhow, we went on the Illuminations cruise and really hit it off- well enough to get together at their pool later during that trip (how could I say no to Storm-along Bay?). We've met up with them 2 more times when our trips overlapped by a day or so, twice when they were in Maine for vacation, and once when I was in Philly for a conference (they live very nearby). However, we email at least once a week and have become great friends- still going strong for 14 years!