I agree completely with you. It is not enough to create post, get upvotes and go dark without interacting with others. Interaction is key to validating Steemit as a social network platform and also a community. Without interaction between members of a community, I consider it to be void of its existence as one. Steemit had just hit the 1 million member mark and as much as it is indeed a huge milestone, such celebration of member count might mean very little to the growth of the platform if a large proportion of the 1 million members of the Steemit community ain't interacting as they ought to. I just hope users with such poor interactive attitude gets to realize this fact.