Bonjour à tous, I just received an email that gave me pause [boldface mine]: I said to myself, "Why should there be concord with nous there?" So I did a Google search for the phrase merci de nous avoir contactés, and it pulled up 84,900 results. But then I tried it without the "s", and I got 161,000 hits. Also, I've been taught that "merci de" is used for a request, as in Merci de votre réponse (when you're asking a question on this Forum, for example) whereas "merci pour" is used to thank someone for something they've already done, as in the above case. What's going on?