I've been using it and evangelizing it for some time now. I don't have a data plan and it works. My data, location, preferences or anything is not sold to anyone.
It can be a little overwhelming at first. It can be difficult to use at times (the search isn't great), but in using it, I feel like I'm a part of something good and I can rest better knowing that.
I saw somebody suggest that the voting buttons should be used to indicate whether the comment benefits the discussion or not.
I suppose the same would be true of the original post; does the post benefit the community.
For example, posting a blog of why Mitsubishi is the best car maker to a photography forum is a downvote, true or not. Posting that veganism isn't a sustainable lifestyle to a vegan sub is an upvote, but you'd better be ready for some backlash.