Adobe Acrobat costs serious money and I have no use for it anyway. I use either Repligo or a free program,
PDA Converter, which works pretty much perfectly when the pdf document is just text. Convert the resulting html files to Plucker or iSilo.
The big problem is DRM-protected Adobe ebooks. If they're just text, then Adobe Reader for Palm works (but is still poor), but if the book has tables or diagrams it really mangles them.
