You can do A LOT more with it, but I had been looking for days for an extension that could do this and ReReplacer is perfect for that task.
You can search and replace any text or code throughout your site, it's great! It also seems like the author provides support in his site. GREAT EXTENSION!
Thank you very much for your review! Hope you have a lot of fun finding out what more ReReplacer can do for you.