How does Webster decide to add new words to the dictionary each year?

To decide which words to include in the dictionary and to determine what they mean, Merriam-Webster editors study the language as it's used. They carefully monitor which words people use most often and how they use them. Lots more info included in the link belowHow does Webster decide to add new words to the dictionary each year?
he is all knowing
They have a committee and they use the various language corpuses (or should that be corpi?) to discover language as it is used. Google 'corpus' to know what they know.How does Webster decide to add new words to the dictionary each year?
Cultural trends - what's popular? Words people use regularly whether they're in the dictionary or not. Like ain't, or ho?How does Webster decide to add new words to the dictionary each year?
buy finding out the most commonly used words by the most people that seem to have a simular meaning when being used.

mark makeup