It is just a rumor but suffice it to say we've heard it from several unnamed sources. In the last two days.
Microsoft is thinking about buying Canadian company RIM - you know that lot that make the BlackBerrys. There's possibly no truth in it whatever, but it makes sense in a perverse way.
Microsoft really has got the bit in its teeth about Apple and the iPhone and the BlackBerry would make a perfect fit with its corporate enterprise strategy.
That's it - it's a rumor.