There is a single user "letsche" in default that is producing nearly 20 million PPD.  This may be related to a recent set of new top producers in WCG that are the result of yet another "virtual currency" mining operation; that one had users running WCG work rather than just crunching on worthless numbers.
 
Looks like kakao doesn't allow linking...

The company, Ripple Labs, is unrelated to any of the WCG projects.  Basically rather than run bitcoin mining, which does lots of computations which amount to nothing, people run WCG and get some sort of credit for their work.  It seemed to be some sort of introductory offer so I don't know if it will continue.  I don't see anything wrong with using all that compute power for beneficial work like WCG rather than just wasting the kilowatts on useless number crunching; Ripple doesn't get anything for all the WCG work that's completed.

Having finally found exactly how Ripple is doing their tie in to WCG - https://www.ripplelabs-wcgxrp.com/ I definitely rescind my 'scummy' comment.
 
These days, based on the chatter I've seen around the BitCoin and other realms, there's dozens of attempts being made to take the work being produced by WCG and Folding and turn them into a money generator that doesn't benefit the project in the least, AKA "How can I make a ton of money on someone else's work without doing much work myself." I've read enough of these attempts to make my 'scummy' reaction knee-jerk, BUT, it's a knee-jerk that makes me hit the pavement and do the research. I want the dirtbags to fail and the cream to rise to the top.
 
With the Ripple promotion, they are taking their OWN funds and linking them to work as a way to get their currency out into the market AND to give the WCG a boost. A win-win for both sides of the coin, as it were.

In this case, we can't refer to it as 'mining' as the currency already exists, this is more of a "Hey, we wanna kick out to you for the work you're already doing".  Mining is the creation of the currency wholecloth (BitCoin and LiteCoin are the prime examples of that pattern) where Ripple wants to supplant other currencies with their method (AKA, they appear to be starting with their currency, just waiting for people to buy into it to give it the agreed upon value).  
 
Anyway, Props to Ripple for promoting WCG and the science in general.

If it sounds too good to be true it usually is http://theweek.com/article/index/242753/want-to-make-money-off-bitcoin-mining-hint-dont-mine . I for one will stick with FAH as it is for medical research. I am not in it for monetary gain but to help find a cure. Bitcoin has been around for awhile but I could not find anyone that made money without donations from others.