I have recently noticed that some people nowadays are using the word "so" at the start of a sentence.
For example - there is currently a question on the Law site which begins:
So I live in Germany, and there is a restaurant about 10 minutes away from my house. I often order from there but now much less.
"So" to my own native ear is a conjunction which links a statement or thought to something which it succeeds e.g. "It was dark so I turned on the light". It can usually be replaced with something like "and for that reason"
Has this more introductory "so" become an idiomatic feature e.g. in America. I've not seen it used nearly as often in Britain.