I purchased an item from ebay and got the following back:
HI!
I HAD SHIPPED YOUR GOODS
YOU CAN GO TO http://app1.hongkongpost.com/CGI/mt/enquiry.jsp
CHECK TRACKING NO:…
IF YOU RECEIVE THE GOODS PLEASE GIVE ME FEEDBACK
THANK YOU!!!
Should I be concerned that the seller said “IF“? 
Haaahahahahaha! I can just picture it now:
I had shipped your goods, but I was being attacked by a large lizard as I rushed it to the local ups, but the ups was already in shambles so I gave it to a guy named Ping who went screaming away in the other direction to avoid some bat-like things. Ping was eaten, but the package continued on, caried on the back of a flying fish. I chased the fish for a while, but it was just too quick. It ran into an airplane in the distance and the package fell onto a moving convoy. The convoy was then ambushed by a… *wife steps in yelling in chinese* Revision: “I had shipped your goods.”
Haaahahahahaha! I can just picture it now:
I had shipped your goods, but I was being attacked by a large lizard as I rushed it to the local ups, but the ups was already in shambles so I gave it to a guy named Ping who went screaming away in the other direction to avoid some bat-like things. Ping was eaten, but the package continued on, caried on the back of a flying fish. I chased the fish for a while, but it was just too quick. It ran into an airplane in the distance and the package fell onto a moving convoy. The convoy was then ambushed by a… *wife steps in yelling in chinese* Revision: “I had shipped your goods.”