In one of my comments, I was asked...
"When you add a link to your blog when you are posting, does the site which you are linking to know you are linking to them? Also if someone links to your blog, how do you know?"

The simple answer is you don't know unless you (or they) do some research.  An easy way to find all of the times that you are mentioned at HSB is to do an advanced google search.  Search for your username and/or your real name.  Limit the search to the "Domain" of www.HomeSchoolBlogger.com.  This search list every entry that you have made, all of the comments that you have left for people, all of your friends links, and anyone who is linking to your blog.

Another way to track how people are coming to your blog is with a site counter.  This will only alert you to incoming links if someone actually clicks on that link AND if you get to your site counter before the entry passes through your view window.