That PointBlankSeo article still recommends press releases & article marketing.
However, Matt Cutts on press releases & article marketing as quoted by SearchEngineLand:
Matt clarified that the links in the press releases themselves don’t count for PageRank value, but if a journalist reads the release and then writes about the site, any links in that news article will then count.
How Valuable is Article Marketing?
Not very. Both Duane and Matt said that articles syndicated hundreds of times across the web just don’t provide valuable links and in any case, they aren’t editorially given. Duane made things simple: “don’t do the article marketing stuff.”
He suggested contacting an authority site in your space to see if they would publish a guest article that you write particularly for them. If the authority site finds your content valuable enough to publish, that’s a completely different situation from article hubs that allow anyone to publish anything.