One fact that can be very frustrating about being a webmaster is how many things occur without your knowledge. For example, your site is visited on a regular basis by dozens or even hundreds of different robots, each with it's own agenda. Unless you become a fanatic about examining your log files, you may never even know.
Another thing that happens naturally is your site may be added to link pages on other sites. You may never find out that this has occurred, as quite often you will not be notified. What happens is someone like your site so they link to it. This is not only normal but desired.
A couple of cool tools that you can use to monitor this kind of activity are listed below.
Unless otherwise noted, all photos and text is Copyright © Richard G Lowe, Jr.