Ads should only be there if it's for something the player can actually use. Like augments, clothing, weapons or other services. In addition I wouldn't mind real life ads as well, as long as it's something you can buy in the game and use, like real car brands or coca cola or whatever. That would be kind of cool.
The Coca Cola ad from Blade Runner is pretty cool.
http://1.bp.blogspot.com/-CkOJv4sWdVo/Ukcg6Dak_yI/AAAAAAAAAhg/kVsga8RLKLE/s1600/Screen+shot+2013-09-26+at+18.22.05.png
I'd rather have in-game brands that the writers can take a jab at thus making comments on real life ones. We mustn't corporatize cyberpunk! There was this soda brand in Avant I'Incal (a prequel to the Incal) called Cocalfol or Cocoloco that had a very fucked up elaboration process. It was pretty cheesy, but fucked up, the way we like Jodorowsky. That soda was also the cause of many cases of juvenile delinquency (and disease) and so the brand used any opportunity it had to fund correctional schools making it look like it was out of charity when it was to keep its own screw ups in check.
Cyberpunk futures are an exageration of problems we already have. If we, in our times, attribute NATO the objective of establishing Coca-Cola and McDonalds in the countries they invade, only half-joking, in a Cyberpunk future their equivalent corporations might hire their own mercenary armies, have their own drones fulfil their own disposition matrixes, etc. All the while not renouncing to their phony family friendly image.