Why is WiFi Often Slow?

Many people use a WiFi network throughout their house or office these days as it’s the easiest to setup since it doesn’t require wires. Even some internet companies are offering a Wireless connection. I find it slow most of the time, even sitting right at the router and gone back to a wired solution. I found this article to be interesting as it discus just that topic of “Why Wi-Fi Is Often So Slow”