pdf, djvu...
(sigh)
Sometimes I *almost* wish SGML hadn't tanked.
Almost.
Mostly when we need to extract useful data or graphs from a paper or report.
Because (of course!) once a paper has been archived to "magical" pdf, there is no need to keep the original source.
Hopefully epub3 will allow extracting an editable document, as the current spec does. It may not be ideal or as useful as the original source document but at least it'll be better than printing-scanning-ocr'ing a pdf...
PDFs can't die fast enough to suit me.
