This news snippet will be totally irrelevant to many of our visitors, but if you live in Germany and you plan to get GTA4, you'll need to be over 18 to buy it. This comes from the German software rater Unterhaltungssoftware Selbstkontrolle, or if like me you can't get anywhere near to pronouncing that properly, USK for short who have reviewed the content of the XBox 360 version of the game. We assume the PS3 version will be rated exactly the same, but we'll find out in the near future.
Thanks to our partner site GTA4HQ for the details.
Check out the original information on the USK Website... If you can read German, that is.