Uwingu was attacked by the International Astronomical Union (IAU) when it started a program to allow the public to select names for exoplanets :

And this year when Uwingu opened a program to name craters on Mars, the IAU attacked that as well.

Now, however, the IAU has created its own exoplanet naming program for the public:

The Popular Science article uses the word “official” a lot but assigning “official” to whatever the IAU management endorses is purely subjective. IAU is just one of many astronomy and science organizations. (I’d guess that only a minority of professional astronomers and space scientists belong to it.) It is neither a global nor intergalactic governmental organization. It’s main job is to organize conferences. Acceptance of the IAU’s space nomenclature system is voluntary. It’s clear that the IAU is merely fighting to protect and expand its turf and to maintain an aura of space officialdom. It wants to keep organizations like Uwingu from trespassing on its turf and dulling its aura.

Uwingu makes no claim that the names selected in its programs are “official” or will become broadly accepted names in the future.  Users are informed of the limited domain for the names they choose. The primary goal is to give people a sense of participation and connection to real places off of earth and in the process raise  some money for research.

The IAU’s exoplanet naming program will do little to limit Uwingu’s activities and I expect will instead encourage more organizations to get into the space place naming biz.