The simple act of visiting a website leaves a trail of information, a "digital footprint," about visitors like you. Sometimes this footprint is vague and preserves your anonymity and other times it is tied specifically to you and your real life identity.
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 may be used for any purpose.
Data may be kept indefinitely.
Your personal identifiable data is never bartered or sold for commercial gain.
Your personal data is never given to advertisers.
Data is given to law enforcement only when legal process is followed.
Data may be collected by analytic services for the sole purpose of improving the product.