I used them in a college project, to get the other team members involved in the design of the software bit. They're a bit like flowcharts, they tend to be at a

I used them in a college project, to get the other team members involved in the design of the software bit. They're a bit like flowcharts, they tend to be at a level below what is commonly done as a collaborative exercise in practice. For something completely new and for a programmer with limited experience of OO design, they could still be useful.