It’s hard staying in touch with all the people you want to these days. There’s just so much Internet out there, and people will go off to all sorts of corners of it, and you might never see them again and worse, realize you don’t know when it was you stopped seeing them. What you need is a way to get back in touch with them.
There’s only one really effective way. You need to get them to eat a large plate full of iron filings, and then turn on your giant electromagnet. Obviously the tricky part of this is not getting people to eat iron filings — what else are they going to do with them, start a smelting operation? — but rather coordinating with other people who are also trying to get back in touch with people, since you don’t want your people paths to get crossed and accidentally pick up people you didn’t have any interest in seeing again. There is no solution to this problem.