If you’re interested in the idea that people shouldn’t be watching where you go during your day. If you don’t think that the state has any good reason to track who you call or email or, possibly, which websites you look at.
And even if you do think that these things are fine but you don’t think that you’d be happy with the idea that the resulting mass of information about you is left with your phone company and ISP to keep safe, then you might be interested in this post on Digital Rights Ireland’s site.
It gives a rundown of the attempt, led by ourselves and the UK, to bring in this kind of surveillence system across the EU. Of course, we already have one here.
Or didn’t you know that?