Do a quality well-research work and provide report

I need someone with good knowledge of Internet marketing/SEO to help us collate some reports. For all the website categories listed below, please list the top websites (10 - 20 if not specified) in each category, please only list the most common + High PR websites.

- Video Sharing Websites (e.g YouTube)
- Social Media Sites (e.g. Facebook)
- Top 25 web 2.0 websites: PR 6 - 9 only (e.g Wordpress)
- Top 50 Alexa ranked websites
- Top 20 Forum boards
- Top 25 Classified/Listing websites
- Top 20 SEO websites (e.g. moz, woorank.com, cutestat.com)
- Top 10 Search Engines (e.g. Google.com )
- Top 10 Traffic Exchange websites
- Top 15 Reference Website (e.g. Wikipedia.com)
- Question and Answers websites (e.g. Yahoo Answer, ask.com)
- Social Bookmarking websites (e.g. stumbleupon.com)
- Tutorial websites (e.g. udemy.com)
- Article Submission websites (e.g. ezinearticles.com)
- Press release submission sites (e.g.sbwire.com)
- Top Freelance Websites (e.g. elance.com)
- Top Micro websites (e.g. seocheckout.com)
- Document Sharing websites (e.g scribd.com)

If you get you list from a website, please do add the link to the report for reference.