Does Google punish Entrecard users? an SEO question

I am aware that there have been rumors that Entrecard users are subject to getting "slapped" by Google for installing the Entrecard widget. However, it has been my experience that this is not the case (at least, yet). How do I know? Well, earlier today, I was interested in the topic, "how to roll over a 401k". I am about to do just that, so I searched for that exact term in Google. To my surprise, the top ranking site, genxfinance.com, has the Entrecard widget installed. I won't even bother telling you the pagerank because pagerank is dying anyway. It is obvious however that they get a nice amount of traffic because they have nearly 5,000 subscribers.

Right away one can tell that the reason they rank the highest for that search term is that their post is absolutely top quality. Their site is nicely laid out, and their content is top notch. On top of that, the traffic they've driven to the site generates comments which provide more keyword juice for google and further boost rankings.

If you have any other examples of websites that rank well for a particular high competition keyword or keyword phrase, please leave it in the comments. I'd love to see them.