I have mentioned Z-wave a few times on this site, especially since getting the Wayne Dalton USB Interface. But do you remember Zigbee (aka IEEE 802.15.4)? Certainly the emergence of the Schlage Link Wireless Keypads and the addition of not only Schlage but also a number of other Z-Wave products into Radio Shack’s retail chain, Z-Wave has seemed to be doing really well these days. But Zigbee is definitely still kicking around. Unlike Z-Wave, they seem to have people pushing for larger-scale ratification and implementation. For example, I noticed in Gothenborg, Sweden, that they were implementing Zigbee into power meters in order to comply with the once-per-month meter readings that…