It's also UTTER tosh to suggest that violent video games have no impact what-so-ever on young impressionable children! It's no different then violent films and arguably worse with regards to influence.
No of course it is rubbish to expect there to be no impact. There are actually proven massive educational and social gains to be had from people who game.
Look up TED talk on gaming for the piece I am think of.
The average gamer will have spent 10,000 hours playing games where they are encouraged to discover the following:
a) They personally are capable of achieving Epic Wins, which is shown to be incredibly positive to their goal setting and drive.
b) They collaborate with others and understand how to subdivide challenges to achieve goals.
c) They have the ability to commit large amounts of time to specific projects to achieve their goals - far from the insta-reward culture that has been feared these people are happy to grind to get what they want.
d) It has now been scientifically proven that a gamer is over 1100 times less likely to commit suicide than their peers.
-edit-
Actually I think research now strongly suggests a negative effect of violent media on young impressionable children actually does exist and I've personally experienced it first hand among my 4 nephews who can become short-tempered and stroppy after long gaming sessions!!
Which of course couldn't have anything to do with them having a low blood sugar level. Or not having been given a goal driven environment at home, or the adults around letting the get away with having a strop after being told to stop doing what they were enjoying doing. Try taking any kid away from what they want and chances are they will be stroppy for a few minutes.
-edit 2-
My wife has been a teacher specialising in the age group from 10-13 for 10 years and is currently doing her masters on Game use in teaching. People have been learning through games since the invention of Chess. So gaming in general terms is an excellent idea. Of course there can be negative effects too - but I think most of these are largely down to a cultural shift where Parents largely both have to work and are using TV and games as a baby sitting tool without having any understanding of what is happening or what the risks are. This makes it prime Daily mail territory. Where it's readers don't understand the subject matter, can't be bothered to find out the facts and can be easily made afraid by scaremongering extremist nazi loving grrrrrr.