bitpicker, how is it possible to say these sentences in a different way? I just try to understand what function infinitive has in the second sentence.
It's nice to talk to you. = To talk to you is nice.
You are nice to talk to. = ?
May be You are nice for talking?

It's nice to talk to you. = To talk to you is nice.To talk to you is the subject.
But what is function of the infinitive in You are nice to talk to? Purpose?