Wireless networks are becoming extremely common place in both the home and business environments. There are two major considerations, the first being range and the second one is security.
The range of a wireless network, although improving is still not brilliant. It works well within the same room and as far as the next room, but much further than that you can receive poor quality and intermittant reception which is extrememly fustrating.
All wireless networks now allow the signal to be encrypted for secure transmission of data and also prevent access to non authorised users, such as your neighbours.