Sounds like it should be illegal. That said, changing my User Agent to IE+Win7 changed the identifier for me. Looks like Firefox's "resist fingerprinting" setti

Sounds like it should be illegal. That said, changing my User Agent to IE+Win7 changed the identifier for me. Looks like Firefox's "resist fingerprinting" setting also works. I wish there was a separare setting for private browsing. That said, that was enlightening, thank you for pointing this out. It's disgusting that there are companies selling this.