Nishi actually posted a few days ago about thank you notes. That was a really interesting thread. However, after what happened to me, I'm not sure if people say 'thank you' IRL anymore. This is about a group project. We were assigned a research problem for an advanced class I am taking this semester. It involved some analytical solutions and some coding. We met up twice to discuss the progress. I had done some work along similar lines and so I derived the analytical solution. the others promised to code it. However, a long time went by and no-one did seem to be coding it, so I coded it myself and sent copies of my code to the rest of the class to verify, extend and question. That means that almost all of the work on the problem is now done. I sent it out but until now, no-one, not a single person ever acknowledged receipt of my solution. I thought that no-one had got it, and asked if they had received my email. They all had. But did I get a 'thanks for sending this so we didn't have to work our asses off on it' or 'thanks for trying to find the solutions' ? No I wonder if the situation is similar in other office environments where group projects are the norm?