Mass renameing images

[MediaGuy]

Originally Posted by iggysick

Just starting new site with tons of images and I want name them by keywords. Is there any tool to rename them automaticly or should I pay someone from microworkers or odesk to do that for me?
I am talking about 10 to 20k images.

I use a program called Rename from a site called http://www.webxpace.com/

It's freeware and the best batch renamer I've used.