50 Forum Links for website

Answer questions on good reputation forums, the home page of backlink should be at least PR4, the backlink page can be PR 0, when you answer the questions, you can refer to my perticular site URL or put my site url as the signature, I will provide you the anchor text and links. 1. Your answer should be meaningfully, relevant and answer the posting's question, no spamming, one line comment just saying something like "this is a great posting, I really appreciate this or benifit from this" does not count. 2. Target US, english site. 3. Backlink pages must be relevant to my page, prefer computer software, tech support, hardware, shopping discussion, coupon, deal etc topic. 4. Domains must be from different IP addresses and different Class-C IP addresses, i.e. you should not post 2 links in the same forum. if you are doing good, we can do this project again after couple months. 5. No more than 10 postings per day. 6. Prefer authoritative domains (.com/.net/.biz/.org/.us/.gov/.edu/) 7. ALL links must be DO-follow. 8. Every 3 days, provide a progress report, so I know you are in progress! Thanks