One commonly used convention, in website links, uses hyperlinks that change colour when followed. Look at the title of this post, Links In The Title Cause Titles That Change Colour . What colour is the title? Now, click on the title, and observe the colour. Next, look at the bottom of this post, and the Topics - " Fonts and Colors , Links , Settings , Settings - Formatting ". What you're seeing, in this exercise, are unvisited (called generally "links") and visited ("visited links") link captions. In this blog, normal text is black - and all links (unvisited, visited, and hovered) are red. Some templates will differ.