Today I got: Hello Katie.
The other day I got: Dear Lisa Cecilia Gorman
I know it saves a ton of time, heck I do it too. Not a huge violent offense, although it serves to remind me that I might not be the one and only special agency where you want to work; I am just one of many special agencies you'd like to work. Including the ones where Katie and Lisa work.
Once I got an offer letter from an agency -- not my current one ;)-- that was addressed to me, then about half way through the letter it said, "and Erin we are so happy to bring you on board." Erin? I was kinda bummed. Again, slight offense. But, just try and do due diligence.