I have no idea about legal rights and how it could affect the forums integrity, since youtube as widely accepted and not always legal as well.. Who's responsebility is it in the first place seen from that perspective.. Youtube's, google books or the forum.. I guess it's the same as happens now, youtube is responsable to check contents and take it down, as google books would be as source. There are many works, papers of field and lab studies etc. to be found on google books.. Anyway i have no clue how this all works with legality issues on the net and end responsibility when linking it in a sticky.. I have no idea if Diana Waldstad approves of it, that here 2nd eddition is freely to be found with in googling 2 minutes. Because of these doubts i didn't post the link at this forum...