BlackBerry 10: AWESOME. If the hardware matches it, RIM jobs are safe

Are you listening, Ballmer? Why can't your Windows mobes do this?

And here's an action that I couldn't perform on Windows Phone OS: flagging a message accessed via IMAP. It's pretty basic:

Flagging a message: Microsoft, please note some of us find this useful

As with Windows Phone, a contacts card pulls in information related to the person, such as looking for photo albums. BB10 also looks for related info but it's more focussed on business:

Context information pulled in for a contact