Show HN: A place for stories
storylike.com
storylike.com
Probably it should be visible below the quote, and not only sharing the title and link, but the quote itself (less for twitter 140 chars) because that's what I want to share from your site.
You probably want to do some A/B testing on your choice of quote. I think that's legitimate.
I personally think the domain name of your site is a little simple. Just my opinion though and I know the domain name market is a nightmare.
I have rating system in place on a scale of 1-10 but i didn't give all the stories a rating yet. I want to crowdsource the ratings in the future, it's on the list of things to add.
As for growing the site itself, I think you'd need to somehow provide some unique-ish value prop to differentiate yourself from yet-another-social-discovery/bookmarking-service, in more than a "StumbleUpon for HN articles" kinda way.
Good luck!