First of all, I must admit that there was a clear effort from the author in providing the useful information. And who says that there is no such thing as 802.11x? 802.11x refers to a group of evolving wireless local area network (WLAN) standards that are under development as elements of the IEEE 802.11 family of specifications.
One word of caution from my end : Please donot post the comments just for the name sake. We need to know what is existing and what is not existing before posting the comments.
I will give 8/10 for this piece.