Haven't heard much about fluent until now. It does seem to be a problem worth solving and 70,000 signups, does imply that it is a validated problem. Still comin

Haven't heard much about fluent until now. It does seem to be a problem worth solving and 70,000 signups, does imply that it is a validated problem. Still coming out of the startups world, it feels eerie that a startup would shutdown within 6 months. Is this one more of those many cases, where the cofounders developed a solution for a valid problem, however failed to figure out how to monetize it?