Instagram to include private messaging service before the end of this year

The social network giant Instagram, a company recently acquired by Facebook, is rumored to have a private messaging system incorporated sometime in an update before the end of this year. With the company just recently applying videos a few months ago, looks like the next step is  having the users being able to directly contact each other.
I for one don’t think this is a great move. I think part of the reason that plenty love Instagram is how basic and simple it is compared to Facebook and others. I feel adding messaging into it will just start turning it into another mini Facebook of sorts. Either way, it looks like it’s going to be implemented no matter what our idea on it is.
What do you guys think, any Instagram users out there happy that this is coming? Or would you rather have it be left out and keep Instagram the way it is?
source: GIGAOM