I do this often, both in corporate context and in real life. There is a data analysis tool named Powerdrill at google. It is one of the most useful tools i hav

I do this often, both in corporate context and in real life. There is a data analysis tool named Powerdrill at google. It is one of the most useful tools i have used, and its impact on the progress of people's projects was huge. It makes data slicing and analysis a breeze, and it always was somewhat implicit that we use it, but we dont think about the work went into it. I asked around to find one of the key guys/initiators. I sent him a message saying a lot of engineers are very thankful for the tool, and it created huge impact. Another friend who sit close to him pinged me the same day, and told me "you made his day". Hearing this made my day, too... From that day on, i try to send people email praising them for a nontrivial work they do good on. I hate group praise, especially when people have no idea what is being done or who is doing it but still respond saying how hard of a work that must have been. This personal email means much much more to receiving side.