We don't know why shipment tracking services are so intriguing lately, but they are. Maybe it's because we've had a handful of packages shipping (selling on eBay) and being delivered lately.

Earlier this week we showed you how you could take advantage of Firefox 3's built-in support for web applications. To be more specific we demonstrated how you can preview iCal calendars using 30boxes.com, and thanks to Lifehacker it looks like you can do the same thing for MailTo links.

Windows only Today we've got an amazing freeware application for Windows that actually serves two different purposes. Give a hardy welcome to LocatePC. First and foremost it will keep you informed of your computer's whereabouts by sending you an email either on a daily basis or anytime the IP address of the machine changes.

I can't say that I was expecting this today, but I'm happy to report that Mozilla Thunderbird 3.0 Alpha 1 (codenamed Shredder) has been released. This version does of course have tabs, and as seen in the screenshot above you can open new messages in tabs for easy navigation. That's definitely a feature I've been waiting for, but now I wish you could actually compose a message in a new tab as well.

I've slowly made the move back to using an email client full-time ever since Gmail started offering IMAP support. By using IMAP both my online Gmail account and all of my email client are kept in sync with each other, which is nice since I read my mail on multiple devices throughout the day.

Now that I'm up and running on my Mac I decided to give the Apple Mail program a shot. It's the built-in email solution that is bundled with Mac OS X, and also lets you do things like leave notes to yourself or manage a todo list. One thing that I quickly noticed was that it doesn't directly include support for HTML signatures.

These days, many of us have multiple places where we store contact information. For myself, I have a list of contacts in my personal email account, my work email account, contacts within some of the social networks I belong to, and then a master list on my computer. With all of the different places where we have lists of contacts, it can get a bit confusing and hard to manage.

Google Apps users who have years (or just a few months worth) of emails stored in Outlook, Outlook Express or Thunderbird, now have a very simple way to upload those messages to a Google Apps mailbox (Gmail). Google just launched an open source desktop utility called Google Email Uploader that gets the job done.

When you look at the  list of uses, advantages and opportunities that the Internet provides, it's seemingly never-ending, yet there are some "dark" sides to it as well. One of those dark sides is that the Internet provides criminals with lots of opportunities to scam good people.

I've been meaning to give Digsby a spin ever since the public Beta was released about two weeks ago. It looked like it was a well designed cross-network (and cross-platform) instant messenger, and it offered quite a few features that no other instant messengers have touched on before. And after having used it for only about 30 minutes I think I may have found myself a new messenger.