Sorry I'm typing with the phone but the program is called "Conectify Dispatcher "
http://www.connectify.me/dispatch/
This isn't a scam as I just tried it myself, going to be testing it more but at the moment I'm just using phone.
Say you are using your home router through wireless, and you have 4G on your phone, you can hook up your phone to the computer and make a USB tethering mode so now you have two Internet connections right? However your computer normally just goes with the one that is more stable.
This program however combines the two to make your Internet faster
Say you have your router at 5 mbps and your 4G is 5mbps, 5+5 =10 now with this running your net speed becomes 10, you can connect ten sources (I think) so connect everything and have faster Internet!
Or leech on any unlocked WiFi Hotspot that you can find, it goes without saying though you can't connect to two wireless Hotspot using the service antenna (built into pc) so if you have a USB antenna use that too.