My brother pointed out an improvement possibility in my email signature block. He noticed that the url pointing to my new book was very long (in fact broken over two lines) and that made it difficult to activate the link.
He suggested using a tiny url (see: http://tinyurl.com/) instead and then acted for me. So in tiny url my book, Guide to Organisation Design, is available
at Amazon UK: http://tinyurl.com/2r9m8m
at Amazon USA: http://tinyurl.com/3cw236
What I enjoyed about the suggestion was a) that my brother saw a process improvement idea and acted on it and b) that the orginator of the idea did similarly.
It's often difficult in organizations to successfully act on an idea.