If you're willing to run a custom android rom, Cyanogenmod has a feature called privacy guard which can blocks apps from accessing your contacts, even if you grant it permission when installing.
In short, it just feeds an empty data set when the app tries to get your info.
Thanks for pointing out this feature of CyanogenMod. I took a look at after reading your comment and I was really quite surprised at how many apps on my phone were asking for stuff I didn't think they should have access to. And of course LinkedIn was one of them too.
who8mylunch|12 years ago