Users have very different opinions when it comes to tag clouds. Some like them, some can't stand to look at the mess. Whatever your feelings are, categorizing items (i.e. blog posts) using tags have become very popular and widely spread and can't be
Y. Wu, Y. Yao, F. Xu, H. Tong, and J. Lu. Proceedings of the 25th ACM International on Conference on Information and Knowledge Management, page 2287--2292. New York, NY, USA, ACM, (2016)