Hey Steve,
You might want to go over to
CutFrameTV and check out this tutorial. It's about 14 minutes long, but to me, totally worth it. It's essentially a "watermark" tutorial, but you can do the same thing with a logo, text etc. I made an action in Photoshop after learning the process, and it has made a huge difference in our workflow...especially posting images on our blog. Hopefully it'll help!
-Jason