can anyone tell me how to put your name or business across your cake photos?

I would just use photoshop and type my name across the photos. I used to do this with my orchid photos because people were always using mine to sell their orchids on ebasy. Drove me nuts so I had to.

Here is an easy way http://www.mommyscamera.com/2010/10/free-batch-photo-watermarking-using.html