Modern browsers can share their current geographic location. This could be useful to simplify careers jobs searching.
I can see the benefit of one less thing to enter, but also think it's fairly low priority - icing on the cake (whereas we're still baking said cake).
It doesn't add enough benefit in my eyes. People could be traveling. Working off-site. Working from home. Looking for an employee for another branch, or a job in a city they are going to move to soon... I can't see how this would give huge benefit over manually specifying the location.