[CJefferson]

There is one HUGE reason for not using PDFs -- PDFs are very blind-inaccessable, whereas tex is perfect.

For that reason alone, arXiv is really helping the blind community in academia.

EDIT: Add missing 'not' :)

[btym]

> There is one HUGE reason for using PDFs -- PDFs are very blind-inaccessable

I think you may have mistyped this. ;-)