Hi,
First, the word would require two g's.
So working with bloggerist --
The â-istâ suffix can mean âa specialist in a specific area,â e.g. a geologist.
Thus, deconstructing your word â bloggerist â can give us the following definition: âOne who Bloggers.â
That does not make sense (although it is kind of funny â I mean, we can all âbloggerâ from time to time â especially on bad days!)
Blogger, without a suffix, already means âone who blogs.â We thus get some heavy redundancy here.
A better constructed word along these lines would be "bloggist."
I don't see any value in blogerist (or bloggerist).
Good luck