6. Complicated categories & tags
One of the best features of WordPress is the capability to categorize content with tags. Taking advantage of this great feature, most of the people create too many categories and tags, as they think this will make ease for users but in fact, it isn’t so. Instead, doing so can affect your site in a negative manner.
Too much and complex categories not only make your site ugly and difficult to navigate, but also influence users to leave your website and affect everything from SEO to load time of your site. So, try to limit tags and categories in order to stay hold your visitors for a long time on your website.
Read more at http://www.jeffbullas.com/2014/04/14/the-15-most-common-wordpress-mistakes-to-avoid/#0bwir6fhJUfddPBR.99