Yes. Definitely, i have come across atleast a few real incidents in my professional career wherein burglers have tracked the user on social networking sites like fb and twitter. Updating that you are one vacation from so and so date and stuff like that have led to thefts in their homes.
I can confirm one incident for sure that i know of wherein burglers saw the update on fb and then targetted their home.!
So be careful when posting on public forums and social media sites.!