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PDFSplit! is a free online PDF splitter. No installation, no registration, it

wikiHow is a wiki based collaboration to build the world’s largest, highest quality how to manual. Our multilingual how to manual has free step-by-step instructions on how to do all types of things.

A-PDF Solution is a PDF software developer who focuses on providing affordable Acrobat PDF tools and customization service for personal and small business.

Yahoo! Answers is a new way to find and share information. You can ask questions on any topic, get answers from real people, and share your insights and experience.

The Adobe Acrobat User Community is a global resource for users of Acrobat and PDF, with free eseminars, tips, tutorials, videos and discussion forums.

YouTube is a place to discover, watch, upload and share videos.

Sciweavers is a bookmarking network for researchers to share and explore research paper preprints grouped by conference name and year or subject area.

Kvisoft, professional Flash flipping book and Flash photo software provider, dedicates to offering you an easy way to make PDF flipping page book and Flash photo albums.

PDFMate Free PDF Converter is a 5-in-1 PDF program to easily convert your PDF to editable Text files, common images, EPUB eBooks, HTML files, and even SWF files.