"12 Ways to Increase the Usability and Accessibility of Your Weblog":
In the Canadian Weblog Awards set of criteria, usability and accessibility refers to the general user-friendliness and ease of navigation for people of all abilities. Creating a weblog with readily available and negotiable navigation and design is essential to creating a weblog that others will visit repeatedly over time. By taking usability into account, you will create a website that physically acknowledges the needs of your readership and develops a more transparent relationship between you and the reader.
In short, designing an easily usable and accessible website tells your audience that you are aware and engaged and that they are important to you.