A but unrelated but I set up a guest network for my apartment building. I had a fun time flashing an old Linksys 54G v.6 with DD-WRT then I set up an unsecured network called "Lanai-Guest" (Lanai Apartments is the name of the apartments)...
It's set to (using Qos) a max of 200Kbps down and 100Kbps up, so while it's fine for email, etc, it probably won't work for illegal torrents nor would it (hopefully not) work for other disgusting illegal stuff like child porn, etc...