Anyone have any experience with this? Fred Langa's most recent LangaList refers to an article he wrote in January about it.
Basically you plug your internet cable [say, the cable from the wall] into the cable modem, then plug the cable modem into the powerline router. You then plug that into any electrical outlet. At any other electrical outlet on the same transformer, plug in the powerline adapter or wireless access point, plug your computer's network into that, and you have a network! We're moving soon, and are trying to figure out ways to lay out our network [currently two computers/desks shoved into one smallish room], and wireless is not cheap, plus not secure [and I can't plug my work laptop into a wireless home network.] These powerline things aren't cheap [one company sells two units for 199], but the concept, imho, is just cool. Want a new office? Move it on over there. Nice day? Go surf the net outside.
These are supposed to be much more secure than wireless, also, since the transformer blocks the signal, and you have to plug in to get on the network. It's probably out of my price range right now, but I'm definitely going to keep an eye out.