Sometimes a piece of software can be so useful and easy to set up that you might end up taking it for granted and not thinking about it that much, even though you use it every single day. For me an example of this is the excellent Mozilla Thunderbird, an email client from the same people who make Mozilla Firefox. While Firefox is very well known, and now commands 20% of the worldwide browser share (well done to everyone involved!), maybe Thunderbird gets a bit overlooked. I've been using Mozilla Thunderbird happily for years now and always found it easy to use and reliable. So I was delighted to see that a new site has been set up to help "spread the word" about Thunderbird which can be found at: http://www.spreadthunderbird.com/. If like me you find Thunderbird really useful you can sign up to become an "affiliate" and place a handsome looking badge on your site to refer people. You won't earn cash from doing this but you will earn "points" that bring you kudos, visibility for your website, and most importantly the knowledge that you have helped. The badges come in all shapes and sizes, from the small (as in the left sidebar if you are viewing this directly on the website) to the very large.
For about the last year I have abandoned the use of my workplace calendar system (based on Microsoft Outlook and Exchange) and using paper diaries in favour of Google Calendar. This solution offers a number of advantages for me, it is entirely web based, it is platform independent and I can even see my appointments on my mobile phone thanks to the mobile version. I've also been using Mozilla Thunderbird, an excellent open source email program, for years.