I wasn't sure if a topic like this goes here at this forum, but here it is anyway. Does anyone know of the various ways that websites that you visit spy on you? Now I know the basic ways that websites spy of you, such as cookies, spyware, malware, viruses, and trojan horses, etc. And I know not to set things up where you are automatically logged into a website when you visit it. And I generally know how to prevent or delete cookies, spyware, and viruses and the like(and I basically use Sandboxie to prevent them in the first place), but what are the slyer, more insidious ways that websites spy on you, and without you knowing about it? Also, I use NoScript where I have to give permission to allow certain sites such as facebook, twitter, googleapis, googlesyndication, doubleclick, etc to run scripts. And unfortunately, sometimes the site you're at doesn't function properly unless you allow some or all of these sites permission to run scripts. But I was wondering if doing so, if one's IP address get's plugged into these websites. And from there, they aggregate(or even individualize) your IP address' internet activity from other sites that you visit, which also have the same site scripts running. Okay, now am I making sense, or am I pretty off as to how the process works? Also, I know that VPNs are suppose to be pretty helpful in providing users with internet privacy, however, I still have a lot to learn about VPNs and other privacy protections. Any thoughts?