If you mean name, gender and location, then yes, those are less likely to be falsified. Everything else - everything that actually matters such as job titles, job descriptions, recommendations - is just as unreliable.

I personally know many people who lie on their profiles. One of my former startup partners lists herself as a CEO, except we were never structured that way, and she was never the top in command. People inflate their resumes all the time - if they have a one-man consulting company, they are the Lead Architect, if they received options as part of their incentives package, they are a Founder, etc.

Just look at all the recommendations. Literally everyone is Bill Gates and Mother Theresa rolled into one. I have yet to see a recommendation that simply says, hey - this guy is a competent programmer. Everyone is "world-class", "exceptionally talented", etc.

In contrast, none of my friends falsify personal information on Facebook. The incentive simply isn't there.