I kept testing and I couldn't get my Mac (10.6) or XP machine to connect to the Jasager'd FON using my home network's SSID. Even though they both automatically connect when in range. I made sure to power off my real router to make sure that Jasager would be the only one near by that it would be able to auto-connect to. I did a bit of digging and I found this:
http://www.home-network-help.com/wireless-client-update.html
According to that KB update it seems that, at least in windows, it doesn't send out probes for networks by default anymore. ie it will only try to connect to SSIDs that are being broadcast that it matches up with. Could this be the reason why? It seems it is but I don't want to assume since it was not mentioned anywhere in any of the tutorials, etc