It goes on and on, but then I have to say it is not only the younger generations that do it. I went to The Globe at the beginning of the summer and we were having a snack in the restaurant before the play and we got chatting to an elderly gentleman who asked us if we were only passing by, or theatering. At the time, and being an English teacher, i mused on how adaptable English can be!
Quite honestly, I found it rather fun at the time, and in context, it worked. I cannot think of a word in English that would convey what he was asking as succintly.
Creating words such as medalling - easily to be confused with meddling (freudian slip there) which are entirely unnecessary, comes under a different heading in my book.