Dofollow + PageRank = Linkjuice
The nofollow attribute in HTML hyperlinks, along with the illustrious Google PageRank are two of the more obvious and important factors for the SEO professional. I think that for individual website owners, knowing about this is much less important.
Better is hiring (on occasion) a good SEO/SEM consultant who has your best interests at heart. Note: the PageRank algorithm worth revisiting on a regular basis to keep in mind how the bots see websites, especially if you want to get into the arcane art of PageRank sculpting.
Discovery of Dofollow
There is of course no such thing as Dofollow, but rather an absence of Nofollow combined with an ability to create links on a given site. One algorithm is something like the number of external links in relation to the number of nofollows and the number of times the word “thanks” is found on the page.
Discovery of PageRank
The use of Google to look up PageRank is not difficult, the only thing that is needed is a tool which goes through a given site (seeded by a set of sites with high SERP ranking for given keywords) and checks PageRank for Dofollow pages. This is something that the linkbuilding wizards at SEO Chiangmai have gotten wired up with local developers. Sweet.
WordPress Plugin for Dofollow (removes WordPress Nofollow)
SEO Chiangmai is Dofollow using this plugin. We’ll see how long that lasts.