A service that collects the credentials of users of resource X, allowing them to view each other’s private records on this resource. Moreover, changing your password on the resource X, you automatically lose access to the service. The scheme of work is something like this: “if you want to see other people, let others see yours”.
Naturally, this way you can aggregate a lot of resources. Post there will not work. ')
Problems:
You need a reliable credential storage. We do not want them to "float away"?
Need a lot of "proxy servers". Otherwise, owners of resources X will be able to block our work by banning our resource, say, by IP address. Well, in general, to come up with a tool, how to read posts and pretend to be a legal user.
Here is such a strange social network is obtained. It resembles one of the modern “sexual games” - a couple of opposite sex swingers come to some institution and everyone has sex with the first creature of the opposite sex.
Naturally, there are many doubts about the moral aspect of such a service. But that is why it seems interesting - unusually, on the verge of morality ...