If all you do is click around and read pages, the data captured about you is vague. If you leave a comment or sign up for a newsletter, the data captured about you is sometimes very specific. Almost all web sites on the web today collect data in this fashion about visitors, and this site is no different.
Data is used for the express purpose of enabling you to read, respond to, and discover published content topical to this site, and nothing else.
Data may be kept indefinitely.