In my opinion, psychoinformatics is just that. Now we have better tools for data collection and analysis plus outside knowledge from computer science. When we talk to psychologists, they have ideas that have been there for a long time but they did not know how to actually run these experiments. We bring a large scale view into their field. They are usually overwhelmed and we need to guide them extensively. (I've had to specifically craft dataframes into SPSS data file formats in a specific order for them to actually be able to work with.)
You'll see that definitions have evolved over time. Each new wave has a new vision based on the latest research trends and tools.