OpenOffice.org has it, and soon MS Office will have it too - PDF writing built in! Microsoft PressPass has an interview with Steven Sinofsky.PressPass: Under what scenarios do you expect customers to take advantage of PDF?
Sinofsky: Customers today are asking for a format that represents the “printed page” and can be viewed on multiple platforms, even if a person does not have Microsoft Office. The PDF format has been broadly recognized as an acceptable way to share information when the author does not want that information easily modified or when there is no longer a need to edit that information. This ability to view on multiple platforms and provide a casual level of document security is a customer need that can be met by PDF. And with the integration in Office “12” we are making this easy for customers.