Not any more.
Now you can easily manage and transfer PDF files from your PC to iPod or iPad with fine precision. not just transfer, but the software lets you do more additional stuff like sorting between the PDF files by size, name, date, etc. In effect, the software lets you manage your PDF files between your computer and the iPod/iPad just like how you do it with music files on iTunes.
Transfer PDF files between PC and iPod/iPad
· Transfer PDF and ePub from computer to iPhone / iPod / iPad
· Backup PDF and ePub files from device to PC
· Manage iPad files on PC
· Sort ePub and PDF files by size or type
· View details of the connected device: capacity, type, format, version
Download the PDF manager application here – Very PDF.