I have just been working on my first PDF portfolio. This is the new Acrobat 9 feature that let’s you put a heap of different file formats together and make them into almost a mini Ajax website.
I had thought this would be complicated, but actually it was a piece of cake when you just customize their templates. Managed to add a load of PDFs, flash videos from animoto and other bits and pieces in a few minutes.
Probably my only negative comment would be that navigation is not consistent sometimes there are breadcrumbs, sometimes not. Also not checked yet in older versions of acrobat.