TomTom satnav speed data fed to police

[Milo]

http://www.guardian.co.uk/technology/2011/apr/28/tomtom-satnav-data-police-speed-traps
I have no problems with speed restrictions enforcement (or traffic, congestion etc. management) but find this big brother staff eerie...

 

[Rob Spec C]

Dirty mother fookers

 

[Hammie]

Glad im not in the Netherlands so

 

[mac mac]

shame on you tom tom , sellin us out

 

[Hammie]

This is Ireland!!! It's not like it's really big enough to get lost in!!!
How often do you actually have your sat nav turned on?
I know it's useful if your not 100% sure of where somewhere is, but do you have it on all the time? (just asking out of curiosity)