Digital photos contain some hidden data which can provide useful information. Even though the hidden data is harmless, one can easily derive GPS data revealing your location or place of work.
One method of avoiding sharing of such extra information on photos is through the use of Metanull. Once downloaded, double click on the executable to launch it.
(http://asset2.cbsistatic.com/cnwk.1d/i/tim/2012/06/13/Metanull.png)
Credit: Screenshot by Ed Rhee/CNET
Select the photos to be scrubbed first then the destination folder for the scrubbed photos. The scrubbed photos can then be shared without fears of extra information being leaked too.
Your turn !
sources: CNET