An appeal of PDF: it's relatively common, and plug-ins allow the format to viewed within some (not all) web browsers.
A downside, from a Diigo user perspective: I *guess* that ISO 19005-1:2005 PDF 1.4 (PDF/A-1) may be not well suited to rich/conversational annotations of the types that are desired by Diigo groups and individuals.
That probably steers any PDF-related possibilities in one or more of the following directions:
a) conversion to OpenDocument format (ODF) b) conversion to Office Open XML (OOXML) c) conversion to XHTML.
Diigo tendency towards HTML/XHTML might be balanced with other communities' tendency towards standards-based annotation of ODF and OOXML.
An appeal of PDF: it's relatively common, and plug-ins allow the format to viewed within some (not all) web browsers.
A downside, from a Diigo user perspective: I *guess* that ISO 19005-1:2005 PDF 1.4 (PDF/A-1) may be not well suited to rich/conversational annotations of the types that are desired by Diigo groups and individuals.
That probably steers any PDF-related possibilities in one or more of the following directions:
a) conversion to OpenDocument format (ODF)
b) conversion to Office Open XML (OOXML)
c) conversion to XHTML.
Diigo tendency towards HTML/XHTML might be balanced with other communities' tendency towards standards-based annotation of ODF and OOXML.
= Further reading =
http://en.wikipedia.org/wiki/PDF/A
http://www.iso.org/iso/catalogue_detail.htm?csnumber=38920
http://www.iso.org/iso/catalogue_detail.htm?csnumber=43485
http://www.iso.org/iso/catalogue_detail.htm?csnumber=51463
http://www.iso.org/iso/catalogue_detail.htm?csnumber=51459
http://www.iso.org/iso/catalogue_detail.htm?csnumber=51461
http://www.iso.org/iso/catalogue_detail.htm?csnumber=51462
http://www.iso.org/iso/faqs_isoiec29500
http://www.diigo.com/0549p for a highlighted view of
http://extensions.services.openoffice.org/project/pdfimport (open source, beta, focused on conversion to ODF).
Pros and cons of ODF and OOXML are beyond the scope of this group; I recommend
http://groups.diigo.com/document-wars/bookmark
Regards
Graham
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