What do you do when you quit hearing from a net friend?

You don't mention how long you knew this person here. I tend to get their emails then associate that way. If it's been a good relationship on the internet and they wanted it to be in the real world they or you should have or would have exchanged addresses. If it was just a few months I'd let it go by as their really isn't anything you can do. People and friends come and go. Especially in the cyber world. Good luck friend. Can't say what you can do as that's your choice. me personally I'd say easy come easy go if they changed their email and won't answer Pms etc. Just another lost cyber friend. HAPPY POSTINGS FROM GRANDPA BOB !!~

I've never really had this happen. I mean, yes, I have known people online and then they disappeared, but it never really bothers me unless it's someone who I conversed with regularly. I still think about some of the people I haven't seen in a while and wonder how they are doing. But, I don't really try to contact them unless they are someone who I chatted with privately a lot, like most days, then I just let them go.