Selected answers from the Dumb SEO Questions G+ community.
Brian Lichtig: What services are you using for back linking? Do you use a software or do you outsource it to someone. If you use a software which one? IF you use a outsource. Can you please recommend a few?
Promoz SEO: Do not use any software to build links but yes do use tools to analyze the opportunities to get a link from. When you build links please make sure about the content relevancy of both linking and linked pages, DA & PA of the linking page, outbound link qualities and relevancy from the ;linking page. Try to get different types of links, comment links, contextual links, social links, forum links (limited) etc. Diversify the anchor texts (more branded, less exact match).