<p>I would prefer "Send a message to the author" or even "Send a message to %{display_name}", since that makes it even clearer what the link does. We use the phrasing "send a message" and similar elsewhere on the site when referring to messages, so it would be good to promote consistency. As far as I can see when we say "contact" it's in documentation not specifically referring to the messaging system.</p>
<p>There's also two places this should be changed. The first is on the diary pages (<code>app/views/diary_entries/_diary_entry.html.erb</code>) and the second is on the diary comment notification emails.</p>

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