Slideshare is an excellent source of presentations for getting a quick overview. Acquired by LinkedIn in May 2012, it has content on business, travel, technology, career planning, and likely any topic you might search for. Users upload presentations, infographics, documents, videos, PDFs, and webinars. Viewers may easily follow favourite contributors and people in their LinkedIn network, and get updates on featured presentations.
For web searchers two to follow are:
Mary Ellen Bates – Super Searcher Tips from a session at Computers in Libraries. She mentions Millionshort.com as method for digging more deeply into Google’s index; also searching Twitter and some other social media searches; and some bits on Google Scholar
Karen Blakeman – How we really search: the end of Google’s supremacy – presentation at Southampton University, UK. She covered social media, main web search engines, some specialty engines, images – much more.