this thing was always happening but it is just getting worse and worse.
I'm talking about "Line Collectors" .... I do monitor Cccam Exchange Section and what I see A LOT of users are actually not interested in any kind of exchange.
All they do they "Collect Lines".... later on you will see your lines published on different websites as free lines.... It is bad, but the worst thing some huge lists of lines are made on internet without even any comments.... you can only guess what for they will be used....

as a rule "card collectors" know next to nothing about CS and it's quite easy to identify them.... just ask them few technical questions about their Locals .... normally they do not know the right answer....

Do not give your lines to "Line Collector"!!!

I hope It helps a bit