Check this out: There is a Mozilla plug-in named "Collusion" that shows graphically which sites are tracking your web browsing. It's quite fascinating to try.
I went to Obama.com and here are the sites tracking my visit there today:
Most are familiar, but I wondered what prx.org was all about. Well, just look at who is funding it:
Right. It's no surprise that PRX includes backers from a Soros company.
Next I checked MittRomney.com.
His site linking includes normal web traffic statistic tracking sites.
Q: Do you see an advantage here?