We all know about links on web pages. We’ve all also noticed that links we’ve visited look different.
You’ve never visited this one, right? (I’m pretty sure you haven’t, since the link is to a randomly-generated URL.) On the other hand, if you’re reading this blog you probably have visited http://www.ftc.gov/ or https://www.ftc.gov/news-events/blogs/techftc. (If not, visit one of them now and come back to this page.) You can see from this example how they look on this blog.