I see this outlet on the wall of everyroom in the house. Just curious what is this for? Can I just remove them? Thanks!
The image url in the previous message didn't seem to work.. Here it is...
It's an old style telephone jack.
For more information:
Since you have it off, you may as well replace it with an RJ-11 outlet (unless you're really going for that "retro" look and have a phone that uses one.