Skimmer Not Skimming or Nothing to Skim?

[ImprezaSTi]

About a week ago, I setup my new tank. Three days ago, I put a shrimp in to let the tank cycle. Right now the tank has everything but the live rock. The tank does not seem to have any algae yet, but it does stink. In the time that the skimmer has been running, I have not seen any skimmate. There is very little foam at the top of the skimmer and it does not rise even close to the collection cup. There has only been some water in the collection cup. It is the Seaclone 100 skimmer. I know this skimmer is not the best but I still expect it to skim, maybe just not as much. So is this normal? I am going to buy some rock tomorrow, should I also return the skimmer?