While email and the Office Hub work well, we were less convinced by the phone's contacts handling. You can import your Windows Live, Google, Exchange and Facebook contacts, but there's no way of selecting which ones you bring in or electing to display only certain contacts - such as those with phone numbers, for example. We didn't find this a particular problem in normal use, as the combination of a great keyboard and fast search makes finding contacts easy.
All this personal information makes your phone an identify theft nightmare, but Windows Live gives you some tasty security features. The Windows Phone 7 web interface lets you locate your phone on a map, remote lock it and display a custom message on screen (such as "give me back") or even erase all personal info. If you've lost it at the bottom of a laundry basket the "Ring it" function will make it ring with a special ringtone, even if the phone is set to silent.
The big screen leaves plenty of room for web pages, and the browser has no problems loading and rendering graphics-heavy sites. There's no Flash or Silverlight support, although you can play YouTube videos with the YouTube app from the Marketplace.