1. #1

2. flickr.com : billjacobus1, mehori, golbenge
http://www.hamedsafa.com/other/445/blackboard
http://www.youtube.com/watch?v=dact-1Tdgz0

7. Daum Foundation, http://vimeo.com/23036180

8. Daum Foundation, http://vimeo.com/23036307

13. Adobe PDF (.pdf)
Adobe PostScript (.ps)
Microsoft Word (.doc/ .docx)
Microsoft PowerPoint (.ppt/.pps/.pptx)
Microsoft Excel (.xls/.xlsx)
OpenOffice Text Document (.odt, .sxw)
OpenOffice Presentation Document
(.odp, .sxi)
OpenOffice Spreadsheet (.ods, .sxc)
All OpenDocument formats
Plain text (.txt)
Rich text format (.rtf)

27. Presentations
pdf, ppt, pps, pptx, ppsx, pot,
potx (Powerpoint)
odp (OpenOffice)
key, zip (Apple Keynote).
Documents
pdf, doc, docx, rtf, xls
(MSOffice);
odt, ods(OpenOffice);
Apple iWork Pages, txt, csv

49. CC korea, http://vimeo.com/15518951

62. facebook ; ILike