And this has *what* to do with Q&A about iHub?
But here's what I'll say on the matter: Any internet site you go to, whether directly or by fetching graphics from it, can log your IP address. It's the nature of the internet.
They can log what operating system you're using, which browser, etc.
To my knowledge, they can't grab things like your username or alias here. All they have is a list of IP addresses. Can't be prevented. It's an internet thing.