they were in the other stargate series but only used in 2-3 ori episodes? maybe once in atlantisAnd the communications stones... that's just weird
i think it sgu would have been better without the stones and no earth communication at all.
also latest episode was boring and screamed uber low budget which tends to mean they were trying to save some money for some CGI action packed episodes but they probably wont be until near the end of the series which imo is a mistake.
they should be trying to get and keep viewers now instead of getting the boring low budget episodes out of the way