Here’s a good example of user interface design on the part of Google. I wrote an e-mail just now to a client in which I was sending them a download link for some materials which I had uploaded to my server. When I went to send the message Gmail realized I had said “I’ve included”, however I had not attached anything, and gave me the above dialog.
This is great user interface feature which would have saved me many times in the past, I’m sure. I can’t remember how many times I’ve forgotten to attach files to an email when I should have.
