Hyper-threading Technology's Benefits and Drawbacks

Assalamualaikum. Here, I would like to share the advantages and disadvantages of hyper-threading technology.

References:1.http://www.windowsnetworking.com/articles-tutorials/netgeneral/Intels-Hyper-Threading-Technology.html

                   2.http://en.wikipedia.org/wiki/Hyper-threading

                   3.http://www.slideshare.net/ankita_mistry/hyper-threading-13849335?related=4