Given the debate here, it's probably best to take the significantly premined mark off of Dash until we can figure out a more appropriate solution. I agree that instamine is not the same as premine.
I see a few options here:
1) Change label to "Significantly mined around launch" or something among those lines
2) Make an instamine label
3) Not care about tracking instamine
I'm preferring #3 because "instamine" is not a well defined term and can be applied subjectively.
Thank you for being professional and impartial. We had some issues at launch that came from a bug on LTC, you would have to include them in the same new category, as several hundred thousand were mined in the first hour, Monero also had early mining issues with an intentionally de-optimized miner for 19 days. Where does it end? Your role is to be impartial and present the coin rankings, and specially not to get involved in the drama between coins that are direct competitors and have conflict of interests trying to use your site as a competitive advantage.
Good luck with the site.