An Issue of Dofollow and Nofollow Theories
This might not be as concrete as what others would assume for a dofollow blog theory knowing that this had never been proven at all. Just some claims, I have visited a lot of dofollow blogs today and I was really surprised to see why they all seem to get all the juice and getting high PR while those nofollow blogs don't. Is there really something that Google has been hiding from the SEO personalities out there who are looking to find the answers to their questions that happened to be the same as mine? Why do dofollow blogs have high PR and how do they really keep their blog's link juice that way?
What's the Secret with Dofollow and Nofollow Linking?
I have hears it about so many times that link juice can be passed if you have a dofollow on your links for a blog but what attracts me to question this is why would those dofollow blogs really get high PR while nofollow blogs don't? Could there be something we are mission here being applied by Google with respect to link rules and how they see dofollow links? I bet not. Then why would a dofollow blog really get to maintain its high PR when they all seem to pass their link juice like havoc on a train unlike those nofollow blogs who don't share link juice at all with their links.
What could really be the secret behind this unique treatment by Google with respect to links or is it really the links with such attribute that attracts the system of Google linking rule that allows dofollow blogs to get higher PR?
Following your Instincts in Using Dofollow in your Links
This is my conclusion on my part but I would suggest though that you follow your instincts where it leads you. I have observed that most of the people who employ or use dofollow with their blog links do regularly update their sites/blogs which we all know has been proven to take in a lot of favor with respect to Google system of updating PR and giving blogs a high PR on the next update.
This is one opinion that I cannot really let pass on this issue. I have also observed that since people who own blogs that have dofollow on their links do tend to manage their blogs well in order to fight spam which might be the sole reason why Google really loves blogs that go for dofollow and so goes with the owners of these blogs. Google also seem to like them and do not make any move at all to penalize them with PR downgrade as much as they do not like blogs that spam their index. This seems to be the relationship that binds Google and Dofollow blogs that are well managed by their owners and get updated on a regular basis.
Link Dillution and How Google Sees and Penalizes Link Spamming
Although dillution of links is another issue when we talk of linking and having dofollow attribute with our links, it is also on my own observation that when you make a linking spree that targets phrases on the long tail, Google seems to like those links and gives you more chances of gaining a higher PR on the next update by basis of knowing that your links are naturally generated and not some paid links that we all know are usually on keywords and keywohrases that are either short or have no backbone. This I think is how Google controls the spam linking and paid links which allows them to see if a single keyword linking frequency is on the move on your blog.
The Longtail Anchor Text Linking
This frequency then sets sail and sends Google some sort of a signal that triggers them to see if you are doing paid linking or link spamming and link dillution with the use of rhetoric keyword or keyphrase linking. This way, with the use of diverse long tail links or the use of long tail keywords and the "read more" system, Google can control spam linking. Although this is mostly based on my own observation only. Go ahead and start looking for that next dofollow blog and see if what I am talking about does not have a basis.
The Google Engineer's Blog is a Concrete Example
Look at what Matt Cutts' blog has on its anchor texts? They all had the same format and we don't notice that because they all look different. Did you get my point here. I mean, linking with the use of long tail keywords or keyphrases do really pay a lot of advantages and it's what the old engineer had been doing all along and also what we've been seeing all along in the Blogger Blog and the Google official blog. I mean, it's simply everywhere and we don't even notice it.