People just hate it sometimes when the ones that they love to use becomes obsolete or depreciated in just a couple of months, even weeks. This kind of feeling can be felt when you own computers, laptops, cellphones, digital cameras, mp3 players, and other technological gadgets. They become less famous due to the newer and better models and units that are being produced faster than a slug eating a burger. This is being felt also in SEO. Before, people have used page ranking through producing links and backlinks using pages that have high PR. This may have peaked for many SEO companies, but in 2011, it seen that a new link building trend is about to emerge and take the interest of SEO groups.
Yes, PR is slowly dying out, and domain and page authority is being adapted in better searches and rankings these days. Though it has been a struggle for older SEO companies to hold on to the old practice, sooner or later, they may have mastered the new method and PR may end up dead. Updated and growing SEO groups like SubmitEdge is aware of the trend and are now finding ways for them to be better aware of preparing pages that have great and stable page and domain authority to be later used in their link building service. If they have been great with PR before, I bet that they will be better and excelling more in authorities when the study and research for knowledge updating have been put to the test.