Two of my favorite tools for embedding and linking files are Embedit and Scribd. Embedit is the probably the easiest tool I have ever used. With a couple of clicks, Embedit provides you with the code to either embed it directly, or embed a link. Scribd provides a few options that Embedit does not. Scribd has easy access buttons to share your file on your favorite social network or bookmarking site. Both have done wonders for my class blog, Seyfert's Sixth Graders.