Google changes its mind quite often! Blog comments from scrapebox: they are not what they used to be mainly because 80% of the autoaprove blogs are noffolow and Nfollow links have lost in value in google`s eyes. Third the normal ultra spined comments we all have with great post, great site blabla have no chance in getting aproved since there are hundreds of this comments coming every day. Only solution I see for this is aim for High PR Dfollow blogs and post using the black box plugin or the plugin that copies the above comments. Forum profiles lost in weight but still have importance, of course not as before. I see a major increase in importance for Dfollow PR 3+ backlinks no matter where they come from so getting this kind of links is important. The above links dont have weight if they dont have a big background of Dfollow PR 0 backs (couple hundreds at minimum) Article marketing-became harder because the content you post anywhere has to be at least 40% unique so keep an eye on this! Content has to be 40% unique in your submisions and on your site because google values more unique content. I dont know if its a coincidence but I see a lot of sites that are in the yahoo directory that rank top 5 for medium keywords. For medium keywords and lower: -keyword in h1 tag is not a must as long as that site has backlinks that looks like this => more than 500 backs mostly .com`s at least 1 PR 5 or more backlinks and 20 PR 2-4. This are just estimates that should give you an idea. Backlinks to a page that you want to rank is not a must, Ive seen a lot of pages that rank top 5 (never 1st) with 0 backs to that page but the main page has 1000+ backlinks So in my opinion uniqueness and authority increased in google eyes, quality backlinks with a background of high number of backlinks are valuable. Site age might have increased in importance. Please feel free to corect me if I am wrong in any of the above afirmations. Also feel free to ask any questions. Hope it was usefull!