wireless wont really be too much to worry about however i do believe it cant be good
had a lecture once about networking technologies and the bloke said after working a room of wireless routers, it gives u one hell of a headache - which i can believe
i do have wireless and its hacked so i can turn the power up double the legal range...but i dont as why would i need to when
1) i get full coverage in my house anyway
2) i dont use the wireless anyway
3) not very ofteni use it at top of ma road
id rather set up powerline networking anyday - costs a bit more but u know where its plugged in, its reliable and faster