One of the main features with their traffic rankings allows you to compare multiple sites at once, so I did this with CC and a few of it's rivals (WaW, landgrab, and dominate game).
Looking at a very broad perspective (5 year range) you will notice that dominate game was easily the most popular risk site a few years ago. Shortly after that WaW took over the market. Then recently, conquer club has been expanding and is currently receiving the most hits per million. CC was only established at the beginning of 2006, so you can see how quickly it rose to the top on this graph.

Looking at a shorter time interval (3 month range) you can see that as recently as September CC was still intermingled with the other top risk variant sites. However during October and November we pulled ahead into a larger portion of the market, and now we are clearly on top.

I say let's keep it that way! Let's keep contributing positively to this community and help the site to improve and grow during its second year of existance. With the improvements and additions lack has in store I see no reason why CC should cease to be the most popular risk site around.