The Linksys E3000 is a true dual-band router, meaning it has two separate access points, one for the ever-popular 2.4GHz band and the other for the 5GHz band, that can work simultaneously. On top of that, it can create an additional separate wireless guest network.
Guest networking is a great solution when you want to share the Internet with others but want to keep them from accessing your local resources such as files or printers. The Cisco Connect software allows you to configure a guest network, pick an easy-to-remember password (or just leave it password-free), and set the number of guests who can use the network. Unfortunately, you can't set more than 10 guests at a time. This means the E3000's guest networking is not a viable Wi-Fi hot-spot solution for a cafe or restaurant. Also, you can't configure the guest network via the Web interface; instead, you must use the Cisco Connect software.