Top 29 Document sharing sharing - pdf sharing sites for backlinks

Top 29 Document sharing sites for back links : 

You can share your documents, pdf / ppt files and get quality of backlinks from these High PR sites. Please share this post and do share more such sites with others via comments.

http://www.box.net/

http://www.esnips.com/

http://www.divshare.com/

http://www.4shared.com/

http://www.gigasize.com/

http://www.yudu.com/

http://www.calameo.com/

http://www.docstoc.com/

http://issuu.com/

http://www.edocr.com/

http://www.gazhoo.com/

http://bookgoo.com/

http://www.keepandshare.com/

http://docs.zoho.com/

https://www.gotomyfiles.com/

http://my.huddle.net/

http://www.twidox.com/

http://pex.webexone.com

http://www.docuter.com/

http://www.slideboom.com/

http://www.slideshare.net/

http://www.authorstream.com/

http://www.slidelive.com/

http://www.slideserve.com/

http://www.scribd.com/

http://www.myplick.com/

http://www.slideburner.com/

http://pdfcast.org/pdf/

http://www.re-pdf.com/