I'm surprised no one has pointed this out before but here is something I noticed recently. Many people are selling you .edu or .gov backlinks these are mostly comment spam and seem to hold very little authority. Yet, if on those same websites the anchored link appears in the body of the website it seems to hold a lot more weight. Just something to think about next time you are buying or seeking backlinks. If you can buy from a site owner it is way more worth your money. The link is more likely to get indexed quicker and have more authority. I only have 2 test sites to back this up so if anyone has more info please share your experiences!