Quoting from a dialog I had on IRC recently:
| *Me* | Your neighbour allows you to share his broadband via his WLAN? | 
| *He* | Yes, and we use a MAC address access list to stop other from doing the same. | 
| *Me* | But you don’t need an access list if you use WPA or WPA2 because it doesn’t approve the security. | 
| *He* | Oh, we are only using WEP because my neighbour’s old 802.11b WLAN card doesn’t support it. | 
| *Me* | He should really buy a better one to able to use secure encryption. | 
| *He* | Yes, he’s going to do that because my notebook with builtin 802.11g has faster Internet access than his computer now. | 
Wireless security is a hopeless matter because people just don’t care. 🙁