Ubuntu is like that, everything is there but hide by default and will make a smile on our lips thinking “Oh was it there already!”. Well, everyone would be transferring and receiving files between your devices, either mobile or laptop or netbook or whatsoever.
Likewise in Windows, file sending is enabled and receiving is blocked in Ubuntu by default for security. But you cannot find and enable receive option in bluetooth settings menu in Ubuntu. This is kept somewhere else named Personal File Sharing. In latest Ubuntu 11.10 it is preinstalled and in some older versions you may need to install the same from Software Center. Open Personal File Sharing and you can see an option ‘Receive files over Bluetooth’ and is disabled. Enable it by clicking on the check box and choose accept files always/only from setup device. Thats it.