pageURL as a condition in processing rules for link tracking

I was finding that when creating a condition off of pageURL, that my processing rule would not work for link tracking.  Despite pageURL being sent to Adobe, it couldn't be used as a condition because it wasn't really counted in reporting.  At the least, I noted to the ClientCare agent that this should be noted on https://microsite.omniture.com/t2/help/en_US/reference/index.html#Dimensions_Available_to_Processing_Rules since it's potentially confusing.