Not getting many studies? Check your profile!
I've been in the same pit as many others lately. I've certainly been getting some studies, but nowhere close to the number that I've been used to.
After completing studies for a while today, my dashboard wound up empty this afternoon. I checked my About You page and found THIRTY questions that were out of date and waiting to be re-answered! I completed all of them, waited about a minute, went back to my Studies dashboard and bam. 8 studies were waiting for me.
So for everybody who's wondering where their studies went, make sure your profile is complete!