This is jarring and stupid and should never be done in any sort of video game (save those played on Facebook) and any game developer who thinks that placing Twitter share buttons in the middle of their dark fantasy RPG is a good idea should think again why it is we play games in the first place.
This has been used by many researchers worldwide to create BCI-based applications that allow users to spell a word, identify images, select buttons in a virtual environment and more recently, even play in an orchestra or send a Twitter message.