Just use the "ignore" function for the user and if enough people use this function, they will be "flagged". But really, once you "ignore" a user like that you will never see a post of theirs again.
I should mention that we have a number of bloggers that post their own content to Hubski, and I personally love that. Who better to share content than the creators of that content? Artists, writers, musicians.. please share, share, share. The key is to then interact with and be a part of the community in order to discuss your creations. surajramnani doesn't comment and likely has no interest in hubski outside of getting views/optimization.
But not all bloggers are created equally.