Ask.fm is a popular question and answer service. With his help, any person you know (or someone you do not know) can ask you questions and track the answers by signing up for your account.
Of course, learn about how to look theirsubscribers want to ask many. That's why such programs are so popular that they allegedly allow it. But they should not be used: the programs do not give real answers. Buying them, you give money for a useless thing and also risk that your account will be hacked or the computer will pick up the virus.
There is a free and proven methodview subscribers on Asuka. Simply ask yourself an anonymous question like "Who signed you?", And in the answer say that you do not know and ask your subscribers to put under him a husky. Of course, this is unlikely to be done by everyone, but so you can find out about some of your subscribers.