Facebook wants that data, too.

The ads we'll be seeing on mobile will increasingly be highly relevant and the time is coming when we'll get offers and ads pushed to our phones the minute we step over a retailer's threshold at the mall.

Facebook is "just getting started" with its mobile app, said Zuckerberg, who explained last week at an investor event that as Facebook collects more data, such as location and which friends "like" certain products mobile ads will be better targeted to users.

Facebook's initial public offering is set for this week and media outlets are stirring up a frenzy, reporting on everything from whether the company is overvalued at $96 billion to which character traits propel Zuckerberg to give speeches to groups of big-shot investors wearing a hoodie sweatshirt. Facebook's mobile future is also getting a lot of attention.

What's your take? Are you looking forward to getting offers and personalized ads on your phone that can steer you to products Facebook knows you or your friends like? Or will they merely be a deterrent to using Facebook while on the go?