Obviously with advertisements through Google Adsense and Project Wonderful, they tend to collect aggregate data. You’ll have to go to each of the websites to see what they collect. I just wanted to be upfront about that.
At this point in time I have not had the blog running long enough to see if I would actually be able to see these email addresses. My guess is probably not since it just goes through WordPress.com. If I do ever see your email address I will never give it out to third parties nor even use it myself without prior permission (for instance if I had a newsletter later, and that would be totally separate from this.)
Just know that I’m not doing anything with any information you send through my blog. That being said, if you’re that worried about it, you don’t have to follow my blog with the box in the sidebar.