All right.
In the world of blogging, 10k visitors per month is a very miniscule number, ideally it should be per day. And there are other factors to it, impressions, page views, unique visitors etc.
Let me warn you though, you can look at 'n' number of stats, but you will never be able to formulate any pattern in blogging. There are just too many variables to consider and the vast number of blogs that are booming each day, you'll have a rough time figuring out any metric that would solve any numerical query regards blogging.
But in case its not about numbers and more of a value based study, then blogging for sure is a major point of contention for professional development through the use of social media since common people, advertisers, publishers, marketers, affiliates, business professionals and sundry do connect majorly through blogs. And they work on a supply-demand model, since the number of readers are increasing by the minute, so are the number of writers and their respective blogs.
As I can see to my right on Inditalk, you are looking for an answer to whether teaching can be done via blogs. I don't have an answer to that, but you can check out udemy.com where you can promote your courses and then earn from them too if someone purchases them. Mine is a technology blog. Though I am not an accomplished teacher, yet I am quite apt at resolving technical queries.