I have been reading the RankXL coarse. I already had a domain just sitting, and it's authority is in the high 30s. I did some keyword research and found a billion keywords that would be easy to rank for in time. I have been working on first pillar post for the last 3 days, and i'm wanting to link to Wikipedia from within the article. Would i make the link Do-follow or NoFollow? Would this be a good idea or not?