And his twitter account clearly showed his employer's name and his job info. How does any adult think that's OK???
I think it is okay. They are consenting adults, let them be Twit-holics and tweet each other and enjoy the benefits it brings to their lives...or stop, either way, their choice.
Both the banker and Lewis agreed to a technology to enter their lives that facilitates this kind of nonsense. If Lewis isn't okay with it, he shouldn't have signed up to read whatever any random person had to say about him.