Hi BHW, I've been lurking as just a viewer for some time and figured I'd get involved. Here's a little background: I'm pretty new to SEO, about 4-5 months as a WH content writer. Although this process is long and grueling, it's rewarding to see when a post on a really high DA site (80-93) site gets hundreds (and sometimes thousands) of shares because I'm contributing original, thoroughly-researched content and results that provide real value to readers. I know this WH practice is basically the complete opposite of BH (the whole quality vs. quantity argument) and especially because the time it takes for 1-2 links on a high DA is probably equivalent to ~100+ links from lesser DA sites. While there are dozens of articles suggesting the "value" of links, I figured this would be a good opportunity to pool the mantras and values of both WH & BH to compile link value property reference guide type of thing. Something that can help all hats gauge time and resource investment based on landing a link on a particular url (I apologize in advance if there has been a post similar to this - I ran a few searches for 'link value' 'properties' etc.. but didn't find anything like what I have mind). Link Value Property Reference Core Value/API Metrics(the definitive values) PageRank Moz Values: domain authority, page authority, trust Domain Age Marketplace Value (ex; PR3 site = $xx.xx) Location (content, byline, sidebar, footer, etc...) Anchor Text/Keywords (tail length) Link Target Value (the page we're linking to) Quality Metrics (some are concrete, others are subjective) Authorship established and author value (Author stats in beta, acutal value is of course debated) Industry Relevance Siteworth (fluff vs. meat & potatoes) Social Signals (shares) & Comments Keyword distribution 'Evergreen' mantra (content that stands the test of time) Content Length (1,200+ words) I know there's more, let's build it up - just let me know what else should be added. Thanks!