Very good idea Renie. But it is not easy to categorise all bloggers as Guru or Master. In other sites like Blogcatalog, mybloglog there is a feature to send messages. Of course, there is chances of Spam. And again we cannot stop spamming too. In blogcatalog there is features like Block, Spam. When someone pressess Spam then the message is taken into view and if found spam or something objectionable the profile is blacklisted. Of course in Blogcatalog there is also a feature to give a blog rank.
Here the ranking feature you talk of is something new and unless the criterias of categorisation is known, it cannot be said now. I know something is breqing in your learned mind. A direct message will certainly foster easy and close networking, i think. if i want to praise or suggest something to a blogger at present there is no such mechanism here though the same thing is available in other sites. In orkut the scrap can be set to private and unless one is friend one cannot send a scrap. this feature can be tried here as well.
I have seen a majority of blogs without having any contact details and it is not advisable to send a message using the comment feature that is available to the post proper. many blogs lack a Contact Us Tab. Anyway, this is my view as i have got closer contact with my friends in other sites. I even chat with them frequently. When a blogger is open to reveal his or her mail id to facilitate chatting then there is no justification, I think to deny a DM feature here.
Further, a chatting feature can also be introduced as in Ning, Facebook, orkut, Ibibo and others.
I was away from my computer but following all from my cell. thanks all for sharing your learned views as your views i think will go a long way in fine tuning and upgrading this site. The forum here is good and clean as some good people are out here.
thanks