Affiliate Marketing Secrets

“When Facebook launched, social networking was not mainstream. Now, with popular competition like Twitter, Google+ and LinkedIn, along with dozens of niche networks and MySpace lurking on the horizon, users have other choices. If Facebook was free forever, the resulting concerns about data and privacy begs the questions – would users really stay?”
I’m from Japan.
I don’t understand what the last sentence in the text above means, among others,
“beg the questions” and ” would user really stay?”.
Could anyone kindly paraphrase or clarify them?
I’ll appreciate your help.

To paraphrase Howard Stern, he’s just not that funny. All his movies are predictable derivatives of each other. The typical plot: Underdog, two-dimensional nice guy/family guy fights against two-dimensional cardboard cutout bad guy, scatological humor ensues, good guy wins, and usually wins girl. The only thing that changes between his movies are the movies’ titles and characters’ names. In almost all of his movies he is wealthy and manages to end up with a blonde that in real life would be totally unattainable. In fact, the uglier he gets as he ages, the younger the women get.
I mildly liked some of his mid-90’s stuff (Billy Madison) but he really isn’t that funny, and frankly if this is the best our (American) studios can make as far as comedy, it’s pretty embarrassing. There is very little really good comedy out there and Sandler just seems to monopolize this niche with his crap..