I read an interesting article about the Beta of Acrobat.com… it sounds like a really exciting and convenient service from Adobe.
Looks like you need Acrobat 9 to use it, but then you can have rich PDF portfolios and real-time capabilities for co-navigating a PDF with colleagues.
There are other collaboration services too like file-sharing, storage space, online PDF conversion, shared reviews, etc.
http://www.acrobat.com
Abobe, like Google, just seems to be getting better all the time.
update:
here is Adobe’s blog about this new service:
