Hey SEOmoz Community! I've spent a bit of time now reading about SEO in books as well as online here within the SEOmoz community. However, I've still struggled to find a straight answer to whether or not directory submissions to non-penalized websites is acceptable.I suspect the reason I haven't found a straight YES or NO answer is because it isn't so straightforward and I respect that. My dilemma is as follows: I want to raise the domain authority for a few websites that I optimize for. I've submitted and gotten listed a bunch of excellent backlinks, however it still is a painfully slow process. My clients understandably want to see results faster, and because they have virtually no past outsourced link-building campaigns, I am beginning to think that I can invest some money for outsourcing directory submissions. I see more and more people talking about the latest Penguin updates, and how many of these sites are now penalized. BUT, is there any harm to submitting to directories such as the ones on SEOmoz's spreadsheet that aren't penalized? My concern is that in the future these will be penalized anyways, and is there a chance then that my site will also be de-listed from Google? At what point does Google completely 'blacklist' your site from its engine? Furthermore, I don't understand how Google can penalize a website to the point of de-listing it, because what would prevent other competitors from sending mass spammy back-links to another? What it all comes down to: At this point, are verified mass directory submissions through outsourcing still much more beneficial than detrimental to the ranking of a website? Thanks SEOmoz community, Sheldon