Do you ever use the Oxford comma?

Yes, I do. I prefer the Oxford comma. In my experience it eliminates more ambiguity than it causes. 

Yes, more often than not  it makes things  clearer and consistent. 

I try to avoid it because in high school English class we were told not to use it because it's wrong for American English.

Typically I do, but that varies...sometimes if I have used lots of commas already I might leave it out.

Also, writing for aMug is very different than other composition. Here, I write more to convey verbal nuance of the moment...sprinkling commas everywhere.
But I give more meticulous attention to an article or composition to be read by many over a longer period of time.

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no, i dont even know what it is

Never heard of it as I went to Cambridge. Personally I prefer the Pythagorean comma. 

Having looked it up, it is contrary to grammar I was taught at primary school. 

 

This post was edited by Malizz at April 3, 2017 12:28 PM MDT

Almost always. It's not generally used in Oz but I picked up the idea from Strunk and White whose Elements of Style was written for Americans. Like Glis, I find that it clarifies. 

If I don't Randy will go into coma;))

I just wish I was around for the Comma Kohoutek or Halley's Comma.