Email addresses obtained here on OhRheally? are used for the purpose of notifying contest winners or for personal communications between the blog owner (me) and the commenter (you) (I like to reply to comments!). It is not necessary to also type your email in the body of the comment because it is already required, and hidden, when you post the comment. I will see it, and nobody else has to. WordPress does record your IP address. I don’t do anything with these either unless you decide to harass or otherwise offend myself or my visitors, then I use the IP address to block you from visiting.
No email address, mailing address, IP address, phone number or name is ever shared or sold except for when you win a contest and then I must share your contact information with a sponsor for prize fulfillment.