The other day when I clicked on a link in Google news to go to the newsweek site I got a message "you have exceeded your limit of 5 free articles a month". I was fine with not reading it but out of curiosity I fired up a tor browser session and tried that newsweek link and got the same message.
This left me puzzled- I thought newsweek's policy is based on number of accesses from an IP address- given that using the Tor browser my IP address is different why would I get the message again?
I repeat, I am not really trying to circumvent their policy- if I must read the article I can always go to the library or try from work or, even Panera! Just interested how it works.