All that’s happening here is, just like every website except the most exceptional or experimental, we are likely putting one or more small text files on your computer called a cookie, it’s just what websites do so we know when you come back that you’re not a first time visitor. It stores none of your contact data.
Same with your IP address, which identifies how you are connected to the Internet at the moment. Again, nothing identifiable without a warrant, but it means web hosts can block spammers and so on.
That’s it, I think.