Interesting indeed. Do you mean that when one visits a site, that is not the original intended site, but another "3rd party" site so as to track one's browsing? If so, does the original site sell this right to them?
Also, is there anything for IE 10 that does the same as the Foxfire plugin?
Worse. The original site makes money from it, yes. It's all a grand scheme and as said, 90-95 percent of sites do it. Many do it only to remain a website because they don't have any other means. Yeah, it's then all sold left, right, upside down and inside out. And I'm only talking corporations and stuff.
ISPs - your OptimumOnline (Cablevision), Verizon, Rogers, Comcast, university networks etc...all log the heck out of everything you do.
Worse even than that is Google logging - so to defeat that - there is
https://startpage.com which shows you the Google results without any form of logging or browser tracking whatsoever!
So - in addition to Ghostery, you can use the plugin HTTPSEverywhere. It assures that any website that can be encrypted uses that version of the site available. There are thousands of websites in the program, many very popular ones you know of.
https://www.eff.org/https-everywhere
Yes, Ghostery works for all browsers and there is an individual download for each.
If you really do not want to have any tracking in any form, use the above with the TOR Proxy and disable Java and disable Flash.
You can learn a lot more on TOR's site:
Tor
Really, you are being tracked by anything and everything you do. If you do not like that as an honest citizen which is entirely acceptable and understandable, the above can educate yourself along with anything else that would like to be asked.