This PSA aimed at educating young girls about the danger of posting personal information online reflects and reinforces a dangerous attitude. Boys and men of all ages are shown shamelessly invading this girl's personal space and/or treating her like nothing more than entertainment.
But the only one scolded is the girl.
The message that the PSA sends is that it is not the boys and men who need to change, but the girls and women. If this weren't true then there would be another similar PSA aimed at boys who post personal information. Identity theft is a huge problem now, but nowhere in the ad is there any mention of that danger.
Girls are across the board at greater risk of sexual violence than boys whether they ever go online or not. The Ad Council recognizes part of this here:
Teenage girls are particularly at risk of online sexual exploitation—a recent study by University of New Hampshire researchers for NCMEC found that of the approximately one in seven youth who received a sexual solicitation or approach over the Internet, 70 percent were girls.
It's all about what can happen sexually to girls who put out (virtually in this example). The more powerful message could have been one that addressed the attitudes which puts girls at higher risk than boys who post the same types of information.
This PSA reinforces the idea that boys and men aren't responsible for respecting girls' boundaries. Worse, this PSA reinforces the idea that girls who continue to post personal information online are asking for it. After all, any girl who doesn't want to be treated the way the girl in the PSA is treated won't exhibit that sort of behavior, will she?
So the warning about the danger increase the danger by increasing the frequency of victim blaming.