Now for my .02 I like to inject, and Mad Max is right on about the judges. But for home use, If you like it do it. I think it helps with the moistness, and the right injection can add a lot of flavor.
I use "Better then Bouillon" found in most markets here in FLA. It's a paste that you dilute for use.
Judge Jim, Given to me by Terry @ Git R Smoked.
Chef Jim, Gym, Jim, or CJ. I'm not a Chef, but I play one on the internet.
A veteran is Someone who, at one point in his life, wrote a blank check made payable to "The United States of America", for an amount of "up to and including my life." That is honor, and there are far too many people in this country who no longer understand it. Author unknown.