what does that tell me -- you didn't do your homework before setting up a rival list.
instead of trying to reinvent the wheel, you should be contributing to a list aka community resource that has been in existence for the past year or so.
and most of us that are subbed to that list, don't have to reveal our identity or tip our hand to our friends and colleagues as to what we're interested in, in order join.
what's next? registering with the feds.
My apologies, i forgot to mention coinspotting, another out of the box, hnc. 
And curious, why hide the fact that you're interested in crypto from your friends / colleagues?
It translated into a good 600 visitors or so from HN.
It's been up and running for about a year now and is starting to gain some traction it seems.
Obviously very tongue-in-cheek.
* News articles that do not contain the word "Bitcoin" are
usually off-topic. This subreddit is not about general
* Submissions that are mostly about some other
cryptocurrency belong elsewhere. For example,
/r/CryptoCurrency is a good place to discuss all
We like dogecoin.
I have never webbed my way to Reddit, nor desire to; I welcome this.
posting links -- for all the world to see -- and then insisting that the list is "by invitation only." why not just set up a private email list.
not only are you setting your site up for less than stellar performance, but you are going to end up with unintended consequences... like a moribund community for starters. instead of growing a community you are going to shrink it. dare i say, sub-traction.
i don't have the figures as to the percentage of users who post to news sites on a regular basis -- the activity on hn is, imho, an exception -- but i would image it adheres pretty closely to the 80/20 rule and may even be less if you take into account factors like waning interest, user attrition; and last but not least, not enough articles being posted on a daily basis to retain interest.
plus you are encouraging free-riders. they way bit.ink is set up, i can visit everyday and read what i want and never feel compelled to participate. i think there are better ways to ward off the spammers, like creating a committed userbase who won't tolerate abuses or tos violations. just step out of line on hn and you'll see how quickly you are put in your place.
You can email me here (and I'll send you an invite): m at block.io