Some recent posts at the 37signals Product Blog:
Basecamp
New in Basecamp: Stylized email notifications
We created new email designs for milestones (and 48-hour milestone reminders), file uploads, messages, to-dos, and comments.
New in Basecamp: Post a message via email
You can now email a message directly to a project. This means you can post messages without even being logged in. Just send a message via email from your desktop, web-based email client, or mobile phone, and it’ll post right to Basecamp as a message.
“Sams Teach Yourself Basecamp in 10 Minutes” is a comprehensive guide to Basecamp
Sams Teach Yourself Basecamp in 10 Minutes by Patrice-Anne Rutledge is a new book that’s the most comprehensive guide to Basecamp we’ve ever seen. If you want to know everything there is to know about Basecamp, this is the book for you.