Not to be a downer but your list is off from what I see, unless you're only counting certain coins of course, but you're missing reddcoin which has something like 17k subs and puts it at #4. Not sure if anything else is missing that's just one I noticed immediately.
I copied the list from a list posted on the blackcoin subreddit. I'll work on making it more accurate.

I also set the starting number at 668 because that's when I joined last night and decided that this subreddit needs to go to the moon.
Hear that guys? We're at least one spot lower! SHAMEFUL. Sub now: http://www.reddit.com/r/blackcoinApart from making us look good, it will help A LOT as a community to have a great spot to go for news and direction!