Cambridge incubator spawns spinoffs aplenty

Are you allergic to VoIP?

Don't go there! No, I mean it...

"They don't know what they're heading into," you find yourself saying, as you drive along the motorway, watching people going in the opposite direction at full speed. What you know, because you drove past it 10 minutes earlier, is that they're heading for a five mile tailback, from which there is no escape, while police clear an accident. All you need, to warn them, is AlertAvert, which Dr Marco Massenzio invented for people with a GPS-based PDA.

GPS means the system can work out where you came from and where the problem is. All you have to do is record a voice message: "There's a nasty smash just before Junction 19!" - and the system sends

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