Microsoft's My Phone enables you to view and manage phone information by using a web browser. In your web account, you can add, edit, and delete contacts and calendar appointments, and the changes will appear on your phone the next time that you sync.
The service is still in beta but when it comes to live you will have to download the My Phone client app which will be installed on your phone. Here are some screenshots from my device while i was beta testing the service:

Once i installed the app it asked me to setup some options like what info i would like to sync and the scheduling. I've selected to sync my Contacts, Tasks, Texts and Videos. There was also an interesting option to sync media content from your Storage Card which wont be much in use since My Phone service provides just 200 MB of free space ! The scheduling options are very well designed so you can set your phone to sync exactly when you want.

Microsoft will be providing for free the My Phone service at this time. But the data plan you have with your mobile operator may require you to pay data-transfer charges when you use the service. If you are unsure of your plan coverage, please contact your mobile operator. Of course if you are using Wi-Fi connection the transfer is for free !
The web interface has nice and glossy vista style UI and the navigation is simple and easy to use. There are things that should be done on big screen, for example editing multiple contacts or reviewing and rearranging your photo or music collections. I enjoyed alot the option to sync and then review my SMS messages history and i plan to use this in the future just for a backup.
Here are some more pics inside the My Phone web interface:
Home page
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Contacts
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Tasks
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Calendar
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For more info you can view the My Phone info page or follow the My Phone blog


