Mastodon is a social network which has become popular in recent months. One of its attractions is that you can express yourself more fully, as some of the server providers allow you to send messages comprising thousands of characters. after all, if you have to condense a message into a small number of characters, this can lead to misunderstanding and frustration. But one problem can occur, and this relates to how to remember the different addresses of the people you would like to write to. Meet the Mastodon Address Book which can help. Available in Leasey version 8.